George Clooney feels left out on the set of OCEAN'S THIRTEEN because castmates and pals Brad Pitt and Matt Damon are bonding over their new babies. Damon's wife LUCIANA BARROSO gave birth to their first child together, daughter ISABELLA, in June (06), just weeks after Angelina Jolie delivered her and Pitt's baby SHILOH NOUVEL in Namibia. So the pair have been sharing tips and stories, to the exclusion of childless bachelor Clooney. According to reports the Oscar winner has nicknamed the pair the "new dad's club".