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We love Zach Galifianakis, but really? Designing a handbag? We thought he just carried one in the movies.

We never saw it coming but it’s true. The comedian has been tapped by Keith Richards’ wife Patti Hansen to design a one-of-a-kind handbag for her line Hung On U, which will be auctioned off for charity at the bag line’s Barneys launch party. Proceeds will benefit the Epidermolysis Bullosa Medical Research Foundation

Galifianakis isn’t the only unlikely guest celebrity designer: The event will also feature bags designed by Anthony Kiedis, Debra Messing, Patricia Arquette and Ronnie Wood. I guess that’s what happens when you’re married to a Rolling Stone, used to be a supermodel, and have two It-girl daughters (Theo and Alex Richards).

There’ll also be handbags designed by Simon Doonan, Donna Karan, Christian Louboutin and Joe Zee–though we’re actually more excited to see what the non-fashion-y celebrities come up with, rather than the industry favorites.

Let’s hope Galifianakis’ crossbody bag (he might call it a satchel) leaves plenty of room for a baby in a carrier. After all, Indiana Jones wears one.