Jennifer Lopez was reportedly the biggest diva at the Cruise-Holmes wedding this weekend. The singer and actress allegedly sent her personal assistant to save the best seats on the private plane that the bride and groom had arranged for a group of their famous friends, including Jada Pinkett Smith and Leah Remini. Lopez also flew in her own hairstylist, Ken Paves, and overdressed for the pre-wedding dinner on Thursday night. "The November 16 dinner was supposed to be casual," said a source. "But JLo, of course, wore a gown. So much for casual." The Jenny from the Block singer also had a waiter prepare doggie bags for herself and Marc Anthony at 2:30 in the morning as they were on their way to the airport to fly back to the U.S.