Anna Kendrick Tries to Steal John Krasinski’s Girl on ‘Lip Sync Battle’ (Video)

“Into the Woods” star dedicates her performance of One Direction’s “Steal My Girl” to her rival’s wife, Emily Blunt

Anna Kendrick takes on John Krasinski on Thursday’s episode of Spike’s “Lip Sync Battle,” and a sneak peek reveals that the actress is not only stealing the show — but also trying to steal her rival’s wife.

Kendrick lip syncs One Direction‘s “Steal My Girl” while serenading a video montage of none other than Emily Blunt, her “Into the Woods” co-star who went head-to-head with her own “The Devil Wears Prada” nemesis Anne Hathaway last week.

Wearing a tee-shirt with photos of both herself and Blunt in a heart, the “Pitch Perfect 2” star pledged her devotion to the British actress in a performance that even had Krasinski collapsing into hysterical laughter.

Kendrick also had another secret weapon on the upcoming episode when Jennifer Lopez made a surprise appearance for a duet.

Hosted by LL Cool J, “Lip Sync Battle” is produced by Krasinski, Stephen Merchant, Casey Patterson, Jay Peterson and Rick Schwartz. Beth McCarthy-Miller of “Saturday Night Live” serves as director.

It originated as a skit on Jimmy Fallon‘s “Tonight Show,” and features celebrities going head-to-head, lip-syncing to some of the greatest hits with sometimes elaborate props.

“Lip Sync Battle” airs Thursdays at 10 p.m. ET on Spike.

Watch the video here.