12?! You're a 12?! And you think that's a problem?!! I'm a size 16. I am not kidding when I say I'm even bigger than I look clothed. But, in all honesty, looking good isn't about size at all, it's just what suits you and your shape. You should try a variety of dress shapes, regardless of whether you think it'd suit your figure or not, you might be surprised. I certainly was when I found my dress. If you really are conscious about trying to look slim, I've found that maxi dresses are really good. They come in under the bust and flow down. I tried one on and it really did look as if I'd shed weight. Coast do quite a few maxi dresses, though I don't know about your price budget. But honestly, keep searching. Nobody suits every dress they try, it just takes getting to know what suits you best.And you've really no need to worry about your size at all, I'd love to be a size 12.