As happens when talk show legends approach their final show, the A-listers are pouring into the Ed Sullivan Theatre to bid a fond farewell to David Letterman. Tina Fey stopped by The Late Show Thursday night to give Dave a present: her dress.

The 30 Rock and Unbreakable Kimmy Schmidt creator made her 20th appearance on The Late Show in a stunning blue dress, which she pulled off mid-interview, swearing to Letterman that she would never again wear one on a talk show.

This isn’t the first time a female guest has shown a little skin on the Late Show; back in 1995, Drew Barrymore famously flashed Dave for his birthday, leaving the garrulous comedian in a rare state of speechlessness.