I'm 5'7, with very slim waist, legs, arms- but my bum is large and round and my hips are very far apart/wide and pointy.

I feel very out of proportion because of my extra big bum and inner/outer thigh area- I would actually rather gain weight everywhere else to balance my hips- so it's not about wanting to be thinner! When I eat more, my problem area just expands and everything else is still twiggy. When I lose weight, my legs and arms look too thin, and my C-cup boobs lose their fullness..But of course the butt remains unaffected!
Imagine a thin woman with hips so far apart there should be a thigh gap, but it's somehow filled in with blubber. Now imagine what on earth she should be wearing ;p If you can, please send me some fashion ideas!!!