Brad, 49, and Angelina, 37, are the ultimate Hollywood couple. After seven years — and six kids — together, the pair announced their engagement in April 2012. "It seems to mean more and more to our kids," Brad's said. "We made this declaration some time ago that we weren't going to do it until everyone can. But I don't think we'll be able to hold out. It means so much to my kids, and they ask a lot."