The models of SI's 2013 Swimsuit Issue do Letterman's Top Ten.

SI covergirl makes a sexy appearance on the morning yakker to promote the swimsuit issues.

Here's our round-up of the sexiest ads of the 2013 Super Bowl, including Kate Upton's tease Mercedes car wash ad, Bar Refaeli making out with a nerd, and Beth Behrs & Kat Dennings pole dancing.

Kate Upton Sexy Bedroom PhotoShoot

Supermodel Kate Upton appears with Jimmy to promote her GQ shoot.

Here's a clip of Kate Upton in a pretty damn sexy Italian magazine shoot. In HD!

Here's Kate Upton in an American shoot from the same magazine. In HD!

Kate Upton GQ Shoot Outtake Photos

Kate Upton Skullcandy Bikini Photos

Kate Upton is in the July edition of GQ shot by Terry Richardson and she looks amazing in a see thru wet tee shirt. In HD!

Kate Upton in GQ July 2012 Photos

Here is peek at Kate Upton in Making of the S.I. Swimsuit Issue 2012 from a VH1 special in HD! Photo set included!

Kate Upton Making of the S.I. Swimsuit Issue 2012 Photos

Kate Upton in a Peter Cottontail Commercial (HD)

Kate Upton Cat Daddy Dance Photos

Kate Upton was talked into doing a very sexy Cat Daddy by Terry Richardson in a bikini! Now we have it in full HD!

Busty Kate Upton is getting all the attention as this year's cover girl, but don't forget about all the other incredible babes, like Cintia Dicker, Chrissy Teigen and the three athletes who did the body paint bikinis this year: Natalie Coughlin, Alex Morgan & Natalie Gulbis.

Check out this series of sexy videos of model Kate Upton bouncing down the runway while modeling bikinis and lingerie.

A sampling of behind the scenes videos for this year's SI swimsuit issue, featuring Brooklyn Decker, Cintia Dicker and Kate Upton. The painted on bikinis are especially hot!