Brad Pitt Helps Celebrate U2's Concerts at the After-Party!

Brad Pitt sits in the back seat while heading into the Chateau Marmont on Sunday evening (May 31) in West Hollywood, Calif.

The 51-year-old actor joined other stars while celebrating with U2 at the after-party following their Innocence and Experience tour stop at The Forum.

Josh Brolin and his fiancee Kathryn Boyd were both spotted at the concert venue that night to attend the show.

Brad is back on the West Coast after spending some time in New York City recently, where he was spotted greeting some lucky fans.