Rihanna and Chris Brown's split was undoubtedly one of 2009's biggest breakups. And, while many people assume the couple ended things in February following their horrific domestic violence dispute, we tend to believe that Rihanna didn't cut him off completely until months later. Kevin Mazur/WireImage.com - December 12, 2008
Celebrity Breakups of '09
From Jon and Kate to John and Jen, check out this list of 2009's biggest breakups.