Nice buns: Heidi Klum strips off for BURGER ad

HEIDI Klum strips down to a silky nightie and flaunts her cleavage in the sexiest BURGER advert ever!

The German supermodel stars in a commercial for fast food chains Carl's Jr and Hardee's newest creation - the Jim Beam Bourbon Burger.

Heidi, 39, plays a burger-eating seductress in a recreation of the famous Mrs Robinson scene from Dustin Hoffman's movie classic The Graduate.

In a sneak preview of the ad, the former catwalk queen explains: "I am playing Mrs Robinson and I am seducing this cute little boy with the burger.

"Food and sauce is on my mouth and I'm licking my lips.

"It's a very sensual, sexy scene." (Thanks. we hadn't noticed).

Despite her lean figure, Heidi insisted the advert wasn't all acting - she loves scoffing fast food in real life too.

She said: "I eat a lot of burgers and I eat a lot of fries."

Burgers have never looked more sexy!