Ricky Martin drops his pants for charity

Ricky Martin posted a pic on his WhoSay page showing him in nothing but a T-shirt, his skivvies and shoes, and looking quite shocked.

No worries - all for a good cause.

The 40-year-old will be auctioning off his trousers for charity to help benefit Broadway Cares/Equity Fights AIDS, the nonprofit that's actively raised funds to help AIDS-related causes for more than two decades now.

"We even ended up auctioning my pants WTF!!! LOL Terminamos subastando hasta mis pantalones jajaja @BCEFA," the star tweeted.