George Clooney's girlfriend Stacy Keibler will host a Lifetime competition show called "Supermarket Superstar," premiering Monday, July 22. She says her relationship with Clooney helped prepare her for the job.

Keibler, a former WWE Diva, will host "Supermarket Superstar," a show in which food inventors pitch their ideas to a panel of judges -- including chef Michael Chiarello and Debbi Fields, of Mrs. Fields Cookies fame -- and then to the buyer for a major store chain, Zap2it.com reports.

Keibler told Zap2it that her travels with Clooney around the world during their relationship has allowed her to try many different types of food, which will be useful in her role as host of the Lifetime show.

Keibler said Clooney has been "very supportive" of her taking and doing her new job.

"I'm an adventurous traveler and an adventurous eater," she says. "I love to sample the cuisine of all kinds of places I've never been to before. Just spending time in Italy (where Clooney has a home) and learning how to cook fresh tomato sauce, I love everything about that country."

Keibler is familiar with TV competitions. She finished third as Tony Dovolani's partner in Season 2 of ABC's "Dancing With the Stars."

Clooney, 52, has been with Keibler, 33, since 2011.

In other George Clooney news, the actor firmly debunked rumors that he was holding hands with an ex-girlfriend while out in London.

"The story is made up. I wasn't holding anybody's hand," the 52-year-old told People magazine.

"Stop trying to sell magazines by creating scandal that isn't there."

George is currently in Europe filming "The Monuments Men" with Matt Damon in Berlin.