Celebrities usually crave privacy above all else, but even the biggest stars sometimes need to get things off their chests. Rather than writing in their diaries, many have taken to penning open letters to fans, haters or even fellow celebs.
Nick Cannon reached out to his "sister" Amanda Bynes to offer words of support to the troubled actress. Via an open letter posted to Tumblr, he told his former All That co-star, "I'm here for you. I understand. I support and appreciate you, because that's what family does."
(Photos from left: John Ricard/BET, Neilson Barnard/Getty Images)