Justin Timberlake performed last night at Planet Hollywood in Vegas for the Shriners Hospital for Children event, wearing a pair of William Rast jeans.  In a shocking move that elicited a gasp from the sell-out crowd, he announced that this would be the last time he would be performing his hit, SexyBack, that he was retiring the song.  Other highlights of the night included Justin Timberlake teaming up with Maroon 5′s Adam Levine to do a little beat box with 50 Cent.  Timberlake also joined Lionel Richie to perform the Commodores‘ hit, Easy.  Other performers included Leona Lewis, the Jonas Brothers, and Rihanna.

I think its great when celebrities put their fame towards a charitable cause.  But what’s up with him retiring quite possibly his biggest hit ever, SexyBack?  It makes no sense!

Image via WireImage.com