Anna Kendrick Raps with Jennifer Lopez for 'Lip Sync Battle'

Anna Kendrick enlists a special guest for her performance of Jennifer Lopez's song Booty on Lip Sync Battle. Photo: Getty Images

Last week Anne Hathaway slayed Emily Blunt in a Lip Sync Battle with her performance of Miley Cyrus' Wrecking Ball. Now it's Emily's husband John Krasinski's turn to take to the stage, competing against Anna Kendrick.

In a teaser clip for this week's episode, the Pitch Perfect 2 actress performs Jennifer Lopez's hit Booty. As if it wasn't already entertaining to see Anna "rap" Pitbull's verse, she enlisted the help of none other than JLo, who struts out on stage alongside the actress.

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Having just performed his rendition of Tina Turner's Proud Mary - while wearing a sparkly silver dress no less - John screamed, "What is happening?"

Check out a preview of Anna and John's performances below.

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