There are some that claim they will give you bigger hips and butt.
Some also say to massage your breasts, up, down and in (NEVER OUT), but that is only if you are on hormones.
A lot of it, is just down to genetics I think, but you can certainly tone areas with exercise. I guess if you follow weight lifting you could target areas to increase muscle size in those areas you want bigger, but everything has it's limits. I'm far from an expert though.