I am a gymnast with a 28 inch waist!?!

So I train a lot and I eat in control.
But these are my measurements:
chest: 34
waist: 28
hips: 36

I am 5 foot 1 and 120 pounds.
I hate being short and stubby!
And I have these huge upper arms which make me look like a stubby wierd woman when I dress up.
And what i don't get is that girls that are stronger than me (in a higher level) have thinner arms than me (still muscular and all but they don't look BAD)

What do I do?!