Katharine McPhee Shakes Her Booty During Amazing ‘Lip Sync Battle’ With Jason Derulo — Watch

Get it, Katharine McPhee! The good girl went bad on 'Lip Sync Battle' when she danced sexily during the epic mini-shows within the show. WATCH right here! Katharine McPhee, 32, let out her wild side in the April 7 episode of Lip Sync Battle when she took on Jason Derulo with Mystikal's "Shake It Fast", then with Jason's own song "Want To Want Me". Check out the crazy video now!

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Kat put on a couple of super sexy performances, first shaking her butt in black leather pants and a huge gold chain as she pulled dollar bills out of her bra. Yesss, girl. For her second song, Kat looked hot in a white silk corset, wrapping her legs around shirtless male dancers throughout the song. “I mean…it’s a whole new Katharine tonight!” LL Cool J told her on the show. “We didn’t know you had that in you! I like it!” Katharine was the runner-up on Season 5 of American Idol, but she took home the prize this time. “I never win anything — I was on a show where I lost so I finally won something!” Kat joked after being named the winner. Take a look:

Kat returned to the final season of American Idol in March to perform “Over The Rainbow”, and she totally nailed it. Dressed in a pretty pink gown with fog all around her, Kat belted out the Wizard of Oz track (no lip syncing there)! That’s the sweet Katharine we’re used to, but of course it was fun to watch her get down and dirty on Lip Sync Battle, too.

HollywoodLifers, what did you think of Katharine’s provocative lip syncing numbers? Did you like seeing this side of her?

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