VIDEO: Sneak Peek - 'Crazy Ex-Girlfriend's Rachel Bloom Performs Katy Perry Classic on LIP SYNC BATTLE

On this week's LIP SYNC BATTLE, it's high school all over again! Watch as the CRAZY EX-GIRLFRIEND star, Rachel Bloom, brings her musical comedy to the stage with Katy Perry's "Teenage Dream"! Rachel takes on Michael Shannon this week in a face off you won't forget, so be sure to tune in this Thursday at 10p/9c!

About LIP SYNC BATTLE: Entertainment icon and two-time GRAMMY Award-winner LL COOL J hosts SPIKETV's original series LIP SYNC BATTLE. The show airs Thursdays at 10/9c.

LIP SYNC BATTLE is already a huge viral sensation. Now SPIKE is taking it to the next level with its very own show, hosted by LL Cool J and with colorful commentary by social media maven and supermodel co-host, Chrissy Teigen.

Each episode will feature two A-list celebrities like you've never seen them before - synching their hearts out in hysterically epic performances. The mic is off, the battle is on!

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