What Party Favors Chris Brown Passed Out At Rihanna's Birthday Party?

Oh. Wow.
Turns out Chris Brown DID show up to Rihanna‘s big B-Day party AND brought favors for all the guest!
According to guests, Mr. Brown wanted his attendance at Rihi’s party to be a BIG secret, so he forced everyone to sign confidentiality agreements saying he didn’t show! WTF??
Obvi Chris and his henchmen didn’t get everyone at the Hearst Mansion to sign — cause an witness tells us after Chris finally came in he spent most of the night grinding on the Birthday girl. The exes spent the night sitting near each other and holding hands.
Sounds like they’re taking full advantage of her restringing order begin lifted!!
[Image via WENN.]