'Twilight', 'True Blood' stars in underwear ad

Two stars of Twilight and True Blood have reportedly teamed up for an "obscene" underwear advert for Calvin Klein.

The 50-second commercial apparently sees Twilight's Kellan Lutz and True Blood's Mechad Brooks feature alongside tennis player Fernando Verdasco and footballer Hidetoshi Nakata.

According to SciFiWire, the men are shown wearing only their underpants and repeatedly asking: "Do you want to see my c**k?" Lutz later says: "C'mon, I know you want to see that s**t!"

The spot is for Calvin Klein's new X-line of briefs and boxers, for which Lutz has already shot several photos.