I made it last summer- I was/am an advanced beginner. Little hard at curvy parts but definitely doable. I am a little smaller My mom is about a size 10/12 on top, and she has made several. She loves the pattern. I don't think it looks as good on a curvy woman with the belt though.
Here is a link to a couple of pictures of mine:
http://www.flickr.com/photos/megvs/sets/72157606323863323/