Kate Upton vs. Katherine Webb
Who'd You Rather?
2/12/2013 8:20 AM PST BY Johnny Lopez
It was a battle of the super babes as Sports Illustrated cover girl Kate Upton
and A.J. McCarron
's overnight sensation GF Katherine Webb
-- who also appears in the S.I. swimsuit issue -- brought their gorgeousness to David Letterman in NYC on Monday.
Question is ...