The new show, hosted by LL Cool J and produced by John Krasinski himself (probably one of the reasons his wife Emily Blunt was one of the first guests last week) became viral from the second it started, and Anna Kendrick's "Lip Sync Battle" is the latest in the epic showdowns!

Over the past few days, Food World News has reported on some of the show's first guests, including Dwayne Johnson moving his lips to Taylor Swift's "Shake It Off," Emily Blunt's performance and most famously Anne Hathaway's viral rendition of Miley Cyrus' "Wreckling Ball" - and now it's Anna Kendrick's "Lip Sync Battle" show making headlines!

According to People Magazine, Anna Kendrick's "Lip Sync Battle" performance is facing some seriously tough competition: the creator of the show, "The Office" star John Krasinski, who should obviously be a complete expert in the fine art of pretending to sing lyrics.

As Broadway World reports, the Oscar-nominated actress has already proved that she's more than talented as a singer, having starred in two musicals to date, "Pitch Perfect" (and its upcoming sequel) and "Into The Woods," where she played Cinderella opposite Krasinski's wife Blunt - but it's still unclear whether Anna Kendrick's "Lip Sync Battle" abilities match her actual pipes when it comes to singing!

According to MTV, Anna Kendrick's "Lip Sync Battle" is set to up the ante for the show, as she'll be adding something new for her performance for the first time since it began airing a few weeks ago: she brought in American Idol judge and pop star in her own right Jennifer Lopez for a duet that looks straight out of a Barden Bellas performance in "Pitch Perfect."

Of course, Lopez's appearance surprised Krasinski, who asked Kendrick what was going on.

Watch the first clip of Anna Kendrick's "Lip Sync Battle" below!