Ewan McGregor, Alison Brie, & More Support Mike Birbiglia at Opening Night of New One-Man Show!

Lots of celebrities stepped out to attend the opening night performance of comedian Mike Birbiglia‘s new one-man show The Old Man and the Pool. Alison Brie and Ewan McGregor were among the celebs in attendance at the performance at Center Theatre Group’s Mark Taper Forum on Wednesday (August 3) in Los Angeles. Alison was joined