Can birth control change your body shape?

I've been considering birth control anyway so this isn't the only reason, but I've always been very small with a rectangular body shape, is there a type of birth control that will be likely to give me a more "adult" body type? And how would I ask for a specific type so they know what I want? I don't mind some weight gain as a side effect, I really struggle to gain weight right now, I've recently gotten to a healthy weight but it wouldn't hurt to gain a little more.