Isla Fisher is planning to ban her Wedding Crashers co-stars Owen Wilson and Vince Vaughn from her wedding to Sacha Baron Cohen - so they can crash it for real. There's no date yet set for the nuptials, but the 32-year-old Australian actress has converted to Judaism so she can marry the Borat actor after a four year engagement. She says, "I'm thinking of not inviting Owen and Vince so I can see whether they can crash our wedding,"