There's a kind of summer style that feels like sun-warmed skin, salt-kissed hair, and the easy hum of a beach town in July. That's exactly what the coastal granddaughter aesthetic brings to your wardrobe in 2025. A younger, softer spin on the viral coastal grandmother look, this trend trades crisp Hamptons polish for something a little more carefree — oversized button-downs borrowed from the boys, vintage-inspired linen sets, flowy sundresses you can actually move in, and raffia accessories that look like they were picked up at a seaside flea market. It's the fashion equivalent of a Nancy Meyers film scored by Clairo: nostalgic, a little romantic, and completely unbothered. Whether you're actually headed to Cape Cod or just want your everyday outfits to feel like a breezy weekend escape, these 20 coastal granddaughter outfit ideas summer will help you nail the look from head to toe. [reference:0]
1. White Linen Button-Down Outfit With Striped Trousers
There's no piece more central to the coastal granddaughter wardrobe than an oversized white linen button-down. Worn open over a simple white tank, it instantly sets a relaxed, lived-in tone. Pair it with blue and white striped linen trousers — vertical stripes feel especially fresh for 2025 — and you have a look that reads effortlessly put together without trying too hard. The trousers bring that nautical nod the aesthetic is known for, while the linen keeps everything breathable on hot afternoons. On your feet, flat leather sandals in a warm tan shade anchor the outfit. Add a woven straw tote big enough for a farmer's market haul, tortoise shell sunglasses, and a few delicate gold rings. This is the kind of outfit you reach for when you want to look like you summer in Nantucket, even if you're just grabbing iced coffee inland. [reference:2]
2. Oversized Striped Shirt Beach Cover-Up Outfit
Sometimes the best summer outfits start with swimwear. A classic white bikini with subtle o-ring hardware details feels modern and coastal, and topping it with an oversized blue striped button-down shirt turns it into a complete look that works from sand to boardwalk. Let the shirt hang open and loose, roll the sleeves twice, and leave the top buttons undone for that perfectly undone vibe. High-cut bikini bottoms balance the oversized proportions up top and elongate your legs beautifully. Slide into waterproof Birkenstock Arizona sandals in a pale oat milk shade, toss a sun-faded baseball cap over air-dried hair, and grab a canvas beach tote. This outfit nails that "just walked off the boat" energy without ever feeling costume-like. It's equal parts practical and photogenic — exactly what you want for a full day by the water. [reference:4]
3. Blue and White Striped Maxi Dress Summer Outfit
A blue and white striped maxi dress is perhaps the most straight-to-the-point way to channel coastal granddaughter energy in one piece. Look for a sleeveless style in breathable cotton gauze with a relaxed fit through the body — nothing too clingy or structured. A subtle side slit adds movement and keeps the silhouette from feeling heavy. Slide into a pair of raffia wedge espadrilles in a natural tan hue to lengthen your frame while keeping things beach-appropriate. A straw top-handle bag feels polished without being precious, and a chunky tortoise shell headband keeps your hair back while adding a preppy punctuation mark. For cooler evenings by the shore, drape a lightweight cream knit over your shoulders and secure it loosely at the chest. It's timeless, it's photogenic, and it works for brunches, baby showers, and sunset strolls alike. [reference:6]
4. Cream Knit Polo Sweater With Light Wash Jeans Outfit
When the morning air still carries a chill, a cream knit polo sweater is your best friend. The collared neckline gives it a preppy backbone that feels right at home in the coastal granddaughter universe, while the soft knit texture keeps the look relaxed rather than rigid. Tuck just the front hem into a pair of light wash straight-leg jeans — a mid-rise cut with a gentle crop at the ankle flatters almost everyone. Slide into buttery leather slide sandals in a caramel brown, and add a woven basket bag with leather straps for that market-ready feel. A thin gold chain necklace and classic tortoise sunglasses finish things off without clutter. This outfit works beautifully for a slow Sunday spent browsing antique shops, grabbing pastries at a seaside bakery, or simply lounging on a porch with a paperback. It's polished but never stiff, which is the whole point. [reference:8]
5. White Nap Dress Outfit With Pearl Necklace
The Hill House Home nap dress has become something of a coastal granddaughter uniform piece, and for good reason. A white cotton eyelet version with puffed sleeves and a smocked back bodice hits that sweet spot between feminine and functional. It's dressy enough for a beachside dinner but breezy enough for a daytime stroll through a coastal village. Style it with flat tan leather sandals that wrap delicately around the ankle, and layer a single-strand pearl necklace at the collarbone for a touch of understated elegance. A rattan crossbody bag keeps things casual and hands-free. Hair pulled back in a low, slightly undone bun with a few face-framing pieces softens the look. This outfit whispers "I just threw this on" while secretly being one of the most put-together looks you'll wear all summer. [reference:9]
6. Linen Co-Ord Set Outfit With Birkenstock Clogs
Matching sets are still going strong in 2025, and a sandy beige linen co-ord set is practically made for the coastal granddaughter aesthetic. Think a boxy, slightly cropped button-up top paired with high-waisted, wide-leg linen trousers that pool ever so slightly at the hem. The monochrome palette creates a long, lean line, while the linen texture keeps everything from feeling too precious. Slide into Birkenstock Boston clogs in a warm taupe suede — the shoe of the season that somehow makes every outfit feel current. Accessorize with a wide-brim raffia bucket hat and an oversized woven tote that can carry a beach towel, sunscreen, and a novel without breaking a sweat. Chunky gold hoop earrings add just the right amount of polish. Wear this for a coastal road trip, a lazy brunch, or a day of gallery hopping in a seaside town. [reference:11]
7. Breton Stripe Top With White Linen Shorts Outfit
Few combinations feel as intrinsically summer-coastal as a classic Breton stripe top and white linen shorts. Choose a knit boatneck style with three-quarter sleeves in navy and cream stripes — it's a heritage piece that instantly codes an outfit as nautical without veering into costume territory. Tuck it loosely into high-waisted white linen shorts with a drawstring waist for a relaxed, pull-on-and-go fit. On your feet, flat cognac leather sandals with a subtle gold buckle add warmth and polish. A straw market bag with colorful tassels brings texture and personality, while a delicate anklet adds a barely-there detail that feels very beach-town effortless. Hair in a messy claw clip, skin dewy and minimal, and you're ready for anything from a bike ride along the boardwalk to an afternoon of wine tasting by the water. [reference:13]
8. Navy Cable Knit Sweater Over Shoulders Outfit
The "sweater draped over the shoulders" look is practically a coastal granddaughter signature, and it also happens to be genuinely practical for summer evenings when the temperature dips. Start with a simple white ribbed tank top tucked into medium-wash denim cutoffs that hit mid-thigh. Drape a navy blue cable knit cotton sweater across your shoulders and secure it loosely with a single knot — no arms through the sleeves. This styling trick adds instant preppy polish and creates a flattering V-shaped frame around your face. Slip into brown leather fisherman sandals with a closed toe, add a canvas tote in a sandy neutral, and finish with gold hoop earrings. This outfit captures that "I might end up on a boat later" energy that defines the coastal granddaughter mindset, even if your evening plans are just a sunset picnic at the park. [reference:15]
9. Blue Floral Maxi Tube Dress With Gold Jewelry Outfit
For evenings that call for something a little more elevated — a waterfront dinner, a summer birthday party, a sunset sail — a blue floral maxi tube dress strikes the perfect note. The strapless, fitted bodice feels fresh and modern, while the flowing maxi skirt keeps the overall mood relaxed and romantic. Blue floral prints on a white or soft cream base tie back to coastal color palettes beautifully. Gold accessories are non-negotiable here: layer a few delicate chain necklaces at varying lengths, add slim gold bangles, and slip on strappy flat sandals in a metallic champagne or tan. A small rattan clutch bag keeps the look evening-appropriate without feeling overly formal. Let your hair air-dry into soft waves and keep makeup minimal with just a wash of bronzer and gloss. You'll look like you stepped off a Mediterranean postcard. [reference:17]
10. Seersucker Two-Piece Set With Platform Espadrilles Outfit
Seersucker is the ultimate East Coast summer fabric, and a matching two-piece set in a pale blue and white stripe feels like it was made for the coastal granddaughter aesthetic. The puckered texture of seersucker means it never needs ironing and actually breathes better the hotter it gets — ideal for humid seaside afternoons. A cropped, sleeveless button-front top paired with high-waisted wide-leg shorts creates a playful proportion that reads youthful and fun. Slip into platform espadrilles with ankle ties for height and a flattering leg-lengthening effect. A straw clutch bag and a wide-brim straw hat pull the whole look together. This outfit is perfect for a summer bridal shower, a daytime garden party, or an afternoon of boutique shopping in a coastal town. It's polished enough for photos but comfortable enough to wear all day. [reference:18]
11. White Babydoll Top With Striped Linen Shorts Outfit
There's something undeniably charming about the contrast between a soft, romantic white babydoll top and structured blue and white striped linen shorts. The top, with its gentle empire waist and subtle puff sleeves, brings a feminine, almost vintage-inspired softness. The shorts ground the look with crisp, preppy structure. Tuck the top in fully for a more polished proportion, or leave it loose for an easy-breezy feel. Slide into flat gladiator-style sandals in a warm brown, and add a woven crossbody bag in natural raffia. A blue lightweight cotton sweater tossed over the shoulders — not worn, just draped — adds that coastal granddaughter punctuation point. This outfit transitions seamlessly from a morning farmer's market run to an afternoon spent reading under a beach umbrella. It's sweet without being saccharine, preppy without feeling stiff, and altogether delightful. [reference:19]
12. Butter Yellow Tube Top With White Linen Pants Outfit
Butter yellow has emerged as one of 2025's most wearable color trends, and it slots into the coastal granddaughter palette surprisingly well. A fitted strapless tube top in this soft, creamy yellow shade feels fresh and youthful against crisp white high-waisted linen trousers. The trousers should be wide-leg and full-length, skimming the floor when worn with flat sandals — the kind that create that elegant, elongated silhouette you see all over Pinterest. Slide into tan braided leather sandals and carry an oversized woven straw tote with leather handles. A few thin gold rings and a pair of oval sunglasses in tortoise complete the look. This outfit hits that sweet spot between "I planned this" and "I just threw it on," which is exactly the kind of energy the coastal granddaughter aesthetic celebrates. Wear it for a rooftop lunch, a seaside cocktail hour, or an afternoon of gallery hopping. [reference:20]
13. Blue Striped Button-Down With White Jeans Outfit
A blue and white striped button-down shirt worn open over a simple white tank is a coastal granddaughter staple that works for countless occasions. Tuck it into white straight-leg cropped jeans — the kind that hit just above the ankle and pair perfectly with flat sandals. Roll the sleeves twice for a relaxed feel, and leave a few buttons undone at the neck and hem. For footwear, opt for tan suede fisherman sandals that are comfortable enough for all-day wear but polished enough to elevate the look. A structured straw handbag with a top handle and gold hardware adds a refined touch. Finish with a thin gold chain necklace and oversized tortoise sunglasses. This is an outfit you can wear to a casual office, a weekend brunch, a coastal road trip stop, or even a casual dinner. It's endlessly versatile and unmistakably coastal granddaughter. [reference:21]
14. Crochet Cover-Up Dress With Raffia Accessories Outfit
Crochet pieces are having a major moment in 2025, and a knee-length crochet cover-up dress in a warm ecru or soft sage green doubles as both beachwear and a standalone outfit. Layer it over a neutral-toned bikini in sand or olive, letting the swimsuit peek through the open-knit texture. The crochet material adds visual interest and a handmade, artisanal feel that fits perfectly within the coastal granddaughter aesthetic. Slip into flat beaded sandals and add layered beaded bracelets for a subtle bohemian undercurrent. A wide-brim raffia sun hat provides shade while looking impossibly chic, and a canvas tote carries all your sun essentials. This outfit works beautifully for a beach day that transitions into a casual waterfront lunch — just swap the bikini bottom for white linen shorts underneath and you're instantly brunch-ready. [reference:23]
15. White Eyelet Sundress With Wedge Sandals Outfit
An all-white eyelet sundress is a summer classic that never feels dated. Look for a midi length with a square neckline, thin adjustable straps, and a gently tiered skirt that moves beautifully in the seaside breeze. The eyelet detailing adds texture and a touch of vintage romance without feeling overly fussy. Pair it with tan raffia wedge sandals that give you height while remaining walkable on cobblestones or sandy paths. A pearl beaded necklace and matching drop earrings elevate the look for nicer occasions, while a natural straw clutch keeps things grounded. For a finishing layer, drape a lightweight cream cardigan over your shoulders for cooler evening temperatures. This outfit is ideal for a summer bridal shower, a graduation celebration, or an anniversary dinner by the water. It's the kind of dress that looks just as good in photos as it does in real life. [reference:25]
16. Navy Knit Cardigan With Denim Shorts Outfit
Coastal granddaughters know the value of a good knit layer, and a navy blue knit cardigan worn open over a white camisole is a foolproof formula. The deep navy brings a nautical richness while the white underneath keeps things light and summery. Pair with longer denim shorts — the current trend leans toward slightly longer inseams and relaxed fits, which feel more modern and flattering than ultra-short cuts. Slide into Birkenstock Arizona sandals in a tobacco brown and add a woven raffia belt to cinch the waist and add texture. A canvas bucket hat and a crossbody straw bag round out the look with practical, beachy accessories. This outfit works for a casual daytime bike ride, a clam shack lunch, or an afternoon of browsing boardwalk shops. It's comfortable, cute, and captures that slightly rumpled, "I've been outside all day" charm the aesthetic thrives on. [reference:27]
17. Linen-Blend Romper With Straw Hat Outfit
A linen-blend romper in a soft sea foam green or powder blue is a one-and-done outfit that makes summer dressing feel effortless. Look for a style with a smocked waist, flutter sleeves, and a relaxed shorts bottom — it's playful but still pulled together. A self-tie belt at the waist defines your shape without cutting into comfort. Slide into espadrille flatform sandals with ankle ties for a leg-lengthening lift, and top things off with a wide-brim straw hat that's equal parts functional sun protection and fashion statement. A small rattan crossbody bag holds your phone, lip balm, and cardholder without weighing you down. This outfit is perfect for exploring a coastal town on foot, a casual brunch date, or a picnic in a seaside park. It's the kind of look that photographs beautifully against ocean backdrops and colorful beach town architecture. [reference:29]
18. White Satin Slip Skirt With Blue Button-Down Outfit
For an evening-ready take on the coastal granddaughter look, pair a white satin bias-cut slip skirt with a blue oversized button-down shirt tied at the waist. The satin brings a subtle sheen and elegant movement, while the borrowed-from-the-boys shirt keeps the overall mood grounded and unpretentious. Tie the shirt at the front into a soft knot rather than tucking — it creates shape and adds visual interest around the waist. Slide into black flat leather sandals with thin straps for a minimalist finish that lets the outfit breathe. A shell-shaped gold pendant necklace and a woven clutch add texture and coastal personality. This outfit works beautifully for a sunset dinner, a rooftop cocktail gathering, or a night out in a seaside town that calls for something a little more elevated. It balances polished and relaxed in exactly the way the coastal granddaughter aesthetic champions. [reference:31]
19. Blue and White Gingham Shorts With Oversized Sweater Outfit
Gingham checks have a charming, picnic-blanket nostalgia that fits right into the coastal granddaughter universe. A pair of blue and white gingham shorts with a comfortable elastic waist and relaxed fit is an easy summer staple. Balance the playful print with a cream oversized knit sweater — wear it loose and untucked for that effortless, slightly slouchy silhouette. On your feet, white Adidas Sambas add a cool-girl sporty edge that keeps the look firmly in Gen Z territory. A mini canvas backpack and sporty oval sunglasses keep things functional and current. This outfit is perfect for a casual coffee run, a morning spent wandering a seaside farmer's market, or a low-key afternoon of boardwalk games and ice cream cones. It's youthful, a little nostalgic, and manages to feel both put-together and completely thrown on — the holy grail of coastal granddaughter dressing. [reference:32]
20. White Linen Tiered Maxi Skirt With Blue Knit Tube Top Outfit
Close out your summer wardrobe with a look that feels like a soft exhale. A white linen tiered maxi skirt moves like water when you walk, and pairing it with a fitted blue knit tube top creates a silhouette that's equal parts romantic and modern. The tube top hugs the body while the voluminous skirt billows out, striking a balance that flatters a wide range of body types. Slide into flat tan leather sandals with a minimalist design, and add a delicate gold anklet that catches the light as you move. A woven raffia tote and thin gold hoop earrings pull everything together without overwhelming the look. A light blue cotton sweater tied loosely around the neck or draped over one shoulder adds that final coastal granddaughter touch. Wear this for a sunset beach picnic, an outdoor concert, or a dreamy evening dinner under string lights. [reference:33]
Conclusion:
The coastal granddaughter aesthetic isn't about having a beach house or a trust fund — it's about capturing a feeling. It's the softness of linen against sun-warmed skin, the easy confidence of an oversized button-down borrowed from nowhere in particular, and the quiet charm of raffia accessories that look like they've been part of your wardrobe for years. What makes these 20 outfit ideas work is their versatility and wearability. You can dress them up or down, mix and match pieces across looks, and adapt them to your personal style, body type, and budget. The palette — soft blues, sandy neutrals, warm creams, and pops of butter yellow — flatters nearly everyone. Whether you're actually seaside or just manifesting coastal energy from your city apartment, these outfits are an invitation to slow down, soak up the season, and dress like summer itself. [reference:34]
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