Naughty Penny! Kaley Cuoco got down and dirty for an upcoming episode of Lip Sync Battle, which airs Thursday, January 28. The Big Bang Theory actress showed off her killer abs while performing Ludacris' 2002 hit "Move Bitch."

Cuoco, 30, wore ripped jean shorts and a black sports bra during the sexy (and raunchy!) set. Her performance was so fierce, in fact, that cohost LL Cool J appeared shocked while watching on the sidelines.

"This is the sweet girl from The Big Bang," LL Cool J, 48, said afterward.

"I watch Penny every week," fellow cohost Chrissy Teigen chimed in. "Where is Penny?!"

Cuoco competed against fellow actor Josh Gad during the show. The two played a married couple in the 2015 comedy The Wedding Ringer.

Lip Sync Battle airs on Spike on Thursdays at 10:00 p.m. EST.

Watch Cuoco's performance in the video above!

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