Lena Dunham Tells Us What Makes Someone Classless

Lena Dunham flashes a smile while walking on the set of her hit show Girls on Monday (August 4) in New York City.

The 28-year-old actress was joined on set by her co-star Zosia Mamet, who donned a chic and colorful skirt.

PHOTOS: Check out the latest pics of Lena Dunham

“Calling someone else classless is the most classless thing you can do,” Lena tweeted earlier in the day.

Last week, Lena donned a cute patterned dress while shopping at the Kirna Zabete showroom in the Big Apple.

FYI: Zosia is carrying a Rebecca Minkoff bag.