Is chocolate a good source for getting bigger hips and a bigger butt?

Eating for bigger body parts is undependable. To start with, you will be adding fat and not muscle. Different people's bodies deposit fat in different ways. Eating high calorie foods may give you more butt, or it could give you more gut. The best way to target an area is exercise. It is just like when a person curls weights. If they do enough, their arm muscles develop and get larger. If you want to do the same to your butt and thighs, you work them.

See the related link below for some exercises that can get you started.