Lena Dunham and Maude Apatow
Credit: Steve Sands/GC Images

Step aside, Taylor Swift—it looks like Lena Dunham has a new BFF. The Girls star was spotted dancing on the set of the hit HBO show with none other than producer Judd Apatow's 15-year-old daughter, Maude. The two were seen grooving as they walked by a New York City school. Dunham sported a colorful dress, red cardigan, green tote, and black boots, while Apatow wore a grey button down, printed pants, black boots, and a backpack.

Apatow, an aspiring writer (whose propensity for witty comments and observations is displayed regularly on her Twitter account), is no stranger to guest roles, having appeared in Knocked Up, Funny People, and This is 40. Plus, acting is her blood—mom is funny lady Leslie Mann. Could this friendly dance session mean Apatow will be making an appearance on the next season of Girls? We can't wait to find out!