Lena Dunham Dances in a Sports Bra for 'Girls' Teaser - Watch Now!

Lena Dunham gets cute with her boyfriend Jack Antonoff while grabbing juices on Sunday (November 1) in Los Angeles.

The 29-year-old actress is starring in the first Girls teaser trailer for the fifth season of the HBO show! The first teaser features Lena in a sports bra dancing in a class setting.

PHOTOS: Check out the latest pics of Lena Dunham

The Girls are back for the fifth season on February 21 and we can’t wait to see what happens when they pick up right where they left off. Watch the first trailer below!