Rihanna Strips Down in Armani Underwear Ads

Credit: Armani

Strike a sexy pose!

Rihanna nearly bares all in her new Giorgio Armani Underwear ad campaign!

In the just-released black-and-white photos, the 23-year-old songstress poses in a lace bra, leather jacket and skin-tight jeans while draping her incredibly toned body over the hood of an antique car.

One particular image is so steamy that it's sure to stop traffic and turn heads: the "S&M" singer is sprawled out in the back seat of the car while gazing at onlookers in just a bra and matching panties.

The Barbados beauty is the latest celeb spokesmodel for Giorgio Armani Jeans and Underwear -- she follows a laundry list of stars including David and Victoria Beckham and Megan Fox, who've all posed in the Italian label's sexy campaigns.