J. Crew creative director Jenna Lyons, credited with (and criticized for) revamping the classic, basics brand, appears on Season 3 of 'Girls,' which launches on Jan. 12 on HBO. You can check her out in the new, densely packed trailer.

Lyons is onscreen for all of five seconds, but she noshes on the scenery.

That's Lyons in the nerdy hipster glasses who points out Hannah Horvath's quickly made acquaintance with the snack room while in a meeting. Ouch!

Watch the trailer over and over, and bask in the neuroses of Lena Dunham's character and of her character's Brooklyn-dwelling pals.