Megan FoxMegan Fox almost takes it all off in a sizzling new advertising campaign that designer Giorgio Armani is set to launch for his Emporio Armani Underwear and Armani Jeans lines.

For the jeans campaign, the 'Transformers' actress dons denim and hugs a bench, showing off her richly tattooed back.

In the underwear campaign, Fox stretches out on a leather sofa wearing nothing more than barely-there black underwear and a couple tattoos.

She's joined by the world's number-one-ranked tennis player, Rafael Nadal, who poses shirtless in separate images. See Nadal's ad after the jump.