Be prepared to see Kelly Clarkson in an entirely new light.

In a preview clip of the series premiere of The Crazy Ones, premiering tonight, the pop-star guest stars, and before the episode is done, she will try to bring a sexier side to a McDonald's campaign, according to US Weekly.

The show, starring Sarah Michelle Gellar and Robin Williams as a father/daughter team who own an advertising agency, will mark the mainstream return to television for both actors. On the show, Simon Roberts (Williams) and his daughter Sydney (Gellar) will be butting heads as the two run their agency. Simon has a more comedic edge, while Sydney is much more buttoned-up and uptight.

The preview clip shows this, as Clarkson gets into the recording booth with Sydney's co-worker Zach (James Wolk) to do a new ad for McDonald's. While Simon looks on and approves, Sydney freaks out.

Reportedly, Clarkson only agrees to the project if she can rebrand herself as a fresher, sexier pop star in the process by singing about the sexier side of McDonalds. She then gets into the booth with Zach and rubs up against him while singing the lyrics "It ain't the meat, it's the motion."

After Sydney freaks, her father has a much more relaxed response.

"Isn't it fantastic? She didn't want to do [the original jingle]. It's all about rebranding," Simon said. "This is all I could get. We're going to pivot her into the right song."

This causes Sydney to fume, "Oh my God! I'm about to watch America's sweetheart orgasm in front of my father!" and storm towards the recording booth.

Williams also revealed that scenes like that would be normal occurrences on the show.

"I love getting an idea, pursuing it and pushing the envelope," he said.

The Crazy Ones premieres tonight at 9:00 p.m. on CBS.

Tags: The Crazy Ones CBS television