2012's Celebrity Engagements
Brad Pitt and Angelina Jolie
The Moneyball star popped the question to his longtime love, with whom he has six kids, using a custom $500,000 16-carat sparkler in April. Together since 2005, the couple previously declared they wouldn't wed until gay marriage was legalized nationwide but admitted to changing their minds earlier this year. "We'd actually like to," Pitt said in January. "And it seems to mean more and more to our kids."