Justin Timberlake & Jessica Biel: 'GQ' Men of the Year Party!

Justin Timberlake and Jimmy Fallon suit up for the 2011 GQ Men of the Year party held at Chateau Marmont on Thursday (November 17) in Los Angeles.

The 30-year-old entertainer was accompanied by his on-again girlfriend Jessica Biel.

During the event, Justin and Jimmy, 37, met up with Jay-Z as they shared some laughs and posed for a photograph with GQ Editor-in-Chief Jim Nelson.

Justin, Jimmy, and Jay-Z grace separate covers for GQ‘s December/Men of the Year issue, on newsstands November 22.

20+ pictures inside of Justin Timberlake, Jimmy Fallon and more at GQ’s Men of the Year party…