BRAD PITT AND MATT DAMON DISCUSS DIAPERS FILMING OCEAN'S THIRTEEN

Brad Pitt and Matt Damon

Brad Pitt and Matt Damon constantly discussed diapers while filming 'Ocean's Thirteen'.The two actors shared their fatherhood experiences when they were reunited for the third movie in the heist franchise. Brad told USA Today newspaper: "I knew something had changed when Matt asked me in passing if I had any extra diapers."Brad has four children with Angelina Jolie, while Matt's wife Luciana Bozan Barroso gave birth to daughter Isabella last June.Their co-star George Clooney joked about being the only actor on set who didn't have kids to look after. He said: "I'm still waiting for the paternity test. I counted the months,and it's been like nine months, so I figure I'm clean!"Don Cheadle - who plays a London bomb expert in the films - revealed that if there is a fourth instalment, they will start killing each other off. Don said: "If we do another Ocean's, we're going to have to start dropping people. We're going to go down, go the other way - 'Ocean's Ten'."George agreed: "Yeah, people are going to have to die. It's going to get ugly."