Kate Upton is Sports Illustrated's latest cover girl for the annual Swimsuit issue. The 19-year-old stunner was last year's Rookie Of The Year in the annual publication.

What a difference a year makes!

The voluptuous blonde, who is reportedly dating Jets quarterback Mark Sanchez, is set to star in Tower Heist with Ben Stiller and the Farrelly brothers' The Three Stooges hitting theaters in April.

Upton is also featured in the March issue of Esquire. Click through to see a smokin' hot photo from her sexy spread.