Missy Elliott has signed on to be part of the new ad campaign for Doritos Collisions, the company's new chips. The commercial, which airs on Sept. 17th, showcasing the rapper working on a track and pausing to eat some of the chips. In the commercial, the two different-tasting chips in the same bag inspire Missy to add a little bit country to her hip hop track.

The ad, which is the most expensive of the year for Doritos (save a Superbowl Commercial spot), was created by the Goodby, Silverstein & Partners agency, according to Billboard.

"The whole idea of the mash-up is so prevalent and popular in music today," says Mona Scott, Missy's manager at Violator. "It's so Missy. And the fact that the campaign takes place in a studio means that Missy remains in her element, which makes the whole thing authentic."

Scott continues, explaining the nature of the deal: "The TV portion is fine, but the Internet element provides us with a great back-end." Scott is referring to the link which will take fans to Missy's web site, where they can learn about her and her new album (tentatively titled "The Countdown"), due in December from The Gold Mind/Atlantic Records. "We see this as a great way to further maximize Missy the artist and the new album."

There will also be a contest (prizes yet to be determined), in participants will log onto snackstrongproductions.com, and will make their own mash-ups/collisions by using Elliott's track for a foundation. Five winners will be chosen.

The track that Elliott made for the ad will not be commercially available, nor on her next album. It may appear in some other capacity in the future.