Butt or Boobs? Guess the Celebrity Body Part, Swimsuit Model Edition (PHOTOS)

Did you guess that these were breasts? Impressive. And did you know that they belonged to 20-year-old model Kate Upton? Even more impressive. Unless you’re some pubescent, sex-crazed teenage boy and/or celebrity boob expert.

But even if you are, click here to play more “Guess Who?”