I think the other ones are cute beach or pool dresses to go over a bathing suit. I know I would personally feel uncomfortable wearing them elsewhere. I'm not a dress person usually. I'm a bigger girl, but also not used to wearing them. However, I did recently buy a little cocktail dress to wear when I go out to night clubs or fancier places that don't call for a more formal dress. Fashion Bug is my favorite, favorite store! I ALWAYS find stuff in my size that fits great.
My favorite is dress 12, definitely. Some of the others ones are nice, but I think 12 is the most flattering for you. Like I said, the others look like they would be cute as beach or poolside dresses. The only one I really dislike is the butterfly one. It makes you look older because the pattern seems like an older style.