Chris Brown -- Don't Tell ANYONE I Was at Rihanna's Birthday
Chris Brown was so paranoid about keeping his attendance at Rihanna's birthday party a big fat secret -- he actually tried to FORCE partygoers to sign confidentiality agreements ... TMZ has learned.Sources tell us, Chris refused to enter the private…
Source: http://www.tmz.com/2012/02/16/chris-brown-rihanna-birthday-confidentiality-agreement/