Open Question: Really weird body shape...exercises?

Okay so I'm 14 and I'm almost 5' 8" and about 132 lbs (60 kg), but I'm a swimmer and so I have big shoulders and back. I have a really small, flat butt (probably because I'm half Japanese) and big wobbly thighs and a not-so-flat-at-all tummy. I have really small breasts and hips too, I wear a 36a in bra size and my waist is 28 and my hips are 33, so I wear a 4-6 in jeans but in tops, more like