There are so many celebrity friendships to adore, from Drew Barrymore and Cameron Diaz's longtime BFF love to Jennifer Lawrence's fun-loving circle of friends, but even high-profile pals can suffer a breakup. Over the years, Paris Hilton has fallen out with both Kim Kardashian and her Simple Life costar Nicole Richie, and who can forget the epic Spencer Pratt-related arguments between Lauren Conrad and Heidi Montag on The Hills? Katy Perry and Rihanna's rift was allegedly over Chris Brown, and G...
PopSugar — There are so many celebrity friendships to adore, from Drew Barrymore and Cameron Diaz's longtime BFF love to Jennifer Lawrence's fun-loving circle of friends, but even h... more info