Matt Damon

The celebrity baby circle is about to get bigger!

Matt Damon took his daughters Isabella, Gia and Stella to Chris Hemsworth and Elsa Pataky's baby shower in Los Angeles on Saturday. The Oscar-winner was on daddy duty as he accompanied his three girls to the party, holding the two youngest ones' hands as they made their way back to the car.

Matt and his wife Luciana Barroso are close friends with Chris and Elsa. The couple attended their intimate vow renewal in St. Lucia last year.

The Monuments Men star, who recently revealed that George Clooney made him party to an elaborate prank between George and Golden Globes hosts Tina Fey and Amy Poehler, seemed to have his hands full. The father of four told David Letterman that he doesn't have time to partake in the prank wars.

Or maybe he does. He most recently sent a "fax" of his butt cheeks to Ben Affleck and Jimmy Kimmel after they heckled him for not having a Twitter account. How do you like them apples?