HBO's ‘Girls’ Adds Jennifer Westfeldt for Season 3

Actress, longtime gal-pal of "Mad Men" star Jon Hamm, will appear on an episode of Lena Dunham's HBO series

HBO's "Girls" is getting a little extra oomph for its third season, in the form of Jon Hamm's gal.

Getty Images

Jennifer Westfeldt, known to jealous women everywhere as the gal who's romantically attached to "Mad Men" star Hamm, has booked an appearance on the HBO series, the premium cable network told TheWrap on Tuesday.

Also read: 'Girls': About That Semen Scene

News of Westfeldt's appearance on the show first broke when the actress — whose own acting credits include 2011's "Friends With Kids" — was photographed shooting a funeral scene with "Girls" star Adam Driver in New York. And now you know — yeah, it's totally a thing that's happening.

HBO had no further details about Westfeldt's appearance on "Girls," which was created by and stars Lena Dunham.

Hamm and Westfeldt have been together since 1997.