Dressing suggestions for my body type

Hello, my name's Heather and I'm a 14 year old girl who's having trouble feeling comfortable with how I 'have' dress.
I'm not happy with my body type and the limited amount of clothing it gives me. My breast size is an F cup size 12, whilst my waist and...

belly are rather small. My breasts are way out of proportion to the rest of my body and therefore doesn't let me wear me more fitted clothes. I would most likely be a size 12 or smaller in shirts if I didn't have such large breasts, but because of them I have to wear size 16-18 shirts. The larger sizes fit around my breasts, but not around the waist and belly, being very loose and making me look fatter. I don't want to wear crazily fitted clothes, or anything that would show of my breasts incredibly, but something that would help me feel more comfortable, help show my figure and not make me feel fat.
Please help me, I would gladly appreciate it.

hi, F cups at the age of 14 :O thats pretty big, I'm 15 and I only have B cups. I'm not really sure but my frist idea for you would be, you know those fasion belt that are like strechy [ http://www.made-in-china.com/image/2f0j00GCTQAmjUgVqtM/Fashion-Belt-BELT-10097-.jpg ] . . . well I think if you had one of those around your waist or somthing it'd make your top hug around your belly so you'd probably look skinny [I assume that having baggy tops makes you look fat] I hope my advice has helped... good luck x