From Sar...
The pencil test (Sara told me about this one).
So Sara was watching some show on television and some woman who works in the fashion industry said that if you want to see if your boobs are supermodel-worthy to take a pencil and put it right under your boob and see if it'll hold it. If the pencil falls, you're good.
I don't need to even attempt this test to know that I'd pass with flying colors. That's right, I have the chest of a supermodel.
Now only if I had a body and face to match ;P