The Big Bang Theory's Kaley Cuoco Performs I'm A Slave 4 U On Lip Sync Battle

Kaley Cuoco, star of The Big Bang Theory, swivels her hips like a young Britney Spears on Lip Sync Battle as she mimics the pop icon's memorable performance of "I'm A Slave 4 U" at the 2001 MTV Video Music Awards in New York City. Cuoco even draps a giant snake around her neck as Spears did (to the chagrin of PETA).

Her opponent, Josh Gad (voice of Olaf from Frozen), performed Divinyl's "I Touch Myself" while dressed as Presidential candidate Donald Trump and locked lips with Cuoco's co-star and former boyfriend Johnny Galecki.

Check out Cuoco and Gad's performances in the video below.

The Big Bang Theory airs Thursdays at 8 PM on CBS.