Jason Deruloreally openedKelly Clarkson‘s eyes to just how sexy cats can be.

The singer and actor, who stars inCats, opened up about his training for the movie musical while appearing on a recent episode ofTheKelly ClarksonShow.

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The performer then dropped down to all-fours, acting like a cat as the audience cheered him on.

His moves left Clarkson, 37, a little stunned.

“I’m gonna show my man that clip, I’m gonna be like, ‘I want you to do that tonight. I want you to come at me like [cat growl],’ ” Clarkson joked.

The movie also stars self-proclaimed cat loverTaylor Swift, who previously opened up about just how much time she spent in cat school.

“I had much more fun than anyone else,” Swift, 29,revealed during an appearance onThe Graham Norton Show.

“I had to go to cat school to learn how to move and behave,” Swift said, of filming. “I was meant to go for three days and I stayed for four months!”

Rebel Wilson, who also stars inCats,opened up about the experience back in February, during an appearance onTheEllen DeGeneresShow.

“We did have to go to cat school, which is where we all pretend to be cats together,” she said. “We have a lady called Sarah who teaches us.”

Wilson also spoke toEntertainment Tonightin February about working with Swift. “She’s incredible.She’s such a lovely girl and I personally think her cat is the sexiest out of all cats,” Wilson said.

“I’m a different kind of cat,” the actress, 39, jokes. “I’m not a sexy Catwoman. I’m doing the middle-aged lazy cat in the movie.”

Catshits theaters Dec. 20.

source: people.com