Lena Dunham Gets Down and Dirty in Her 'Tonight Show' Lip Sync Battle

by Meredith B. Kile 11:00 PM PDT, June 12, 2015
Photo: NBC

Lena Dunham is the latest star to step up against Tonight Show host Jimmy Fallon for another installment of Lip Sync Battle, and the Girls producer and star brought out the big guns on Friday!

"I wanted to take this seriously and I needed room to flex," Dunham jokes of her sportswear ensemble.

WATCH: Will Ferrell Flawlessly Lip Syncs Beyonce's 'Drunk In Love'

Fallon led off the competition with a silly and sad take on obscure ‘80s pop hit "I've Never Been to Me" by Charlene. Dunham brought things back to the 21st century with her follow-up, writhing on the floor and gettin' dirty as she lip-synced the Ellie Goulding/Calvin Harris hit "Outside."

Fallon kept it old school but switched over to hip-hop for his finale with the Run-DMC singalong classic "Run’s House," but it was Dunham who brought the house down with her take on Queen's "Fat Bottomed Girls."

"Queen, I can’t beat Queen!" Fallon exclaimed as the audience cheered louder for Dunham’s as the victor in the latest Lip Sync Battle.

WATCH: See Dwayne 'The Rock' Johnson's Amazing Lip Sync to Taylor Swift's 'Shake It Off'