Please Welcome to the Stage: Every Single Surprise Taylor Swift Guest

Who?! Lena Dunham is the writer and star of HBO's Girls. Plus, she has an amazing book called Not That Kind of Girl.

Where?! East Rutherford, NJ.

Why?! Lena Dunham's longtime boyfriend and Fun. frontman Jack Antonoff helped Taylor produce 1989. We're not sure who Taylor met first, but the connection is clear. Lena was also in the "Bad Blood" video and has stated that she'd totally have Taylor on Girls.