Chris Brown, Ludacris and Swizz Beatz all performed their collaborative party hit, "Everyday Birthday" at this year's 2012 American Music Awards, and Chris Brown has once again caught heat for lip syncing.  While it seemed as though Chris was actually singing for at least a good portion of the performance, Perez Hilton called him out for lip syncing on Twitter, and Chris responded as well.

Check out the tweets above.