George ClooneyGeorge Clooney is reportedly feeling a left out on the set of Ocean’s Thirteen since co-stars Matt Damon and Brad Pitt have a joint new obsession.

Since the trio filmend Ocean’s Twelve, Matt and Brad both became fathers for the first time, with baby girls born just weeks apart and Brad adopting Angelina’s Jolie’s children Maddox and Zahara too.

An inside source on the set says George “calls them the New Dad’s Club because they talk about little else.”

“They’ve been exchanging diaper changing techniques and trying to outdo each other with gruesome stories about toilet habits.”