Half-Naked Nelly

All right, Becks, we enjoyed your Armani ads, but you can get dressed now -- there's a new six-pack in town, and it belongs to Nelly. The rapper is the new underwear spokesmodel for Sean "Diddy" Combs's Sean John label.

We're not sure about the spokes part but, from what we've seen, Nelly, 33, is fulfilling his modeling duties admirably so far. In a statement, Diddy says: "[Nelly] has the attitude, the swagger, and most of all the physique that our customers can both aspire and relate to ... And let's be honest, all of the ladies out there are going to be thanking us for this campaign." How public-spirited of him.

And lest anyone mistake Nelly for a mere sex object ... the star has a dramatic new gig. He's about to hit CBS drama series "CSI" this fall for a multiple-episode arc as a club owner-turned-informant. "He's a great actor," executive producer Pam Veasey told EW.com about the hip-hop hottie, who's only previous acting experience was in 2005's "The Longest Yard." "He really stepped up."

Clothes or not, it seems we'll be seeing a lot more of Nelly in the coming months. And that can't be bad.

Who else would you like to see modeling underwear?