Topher Grace & Joe Manganiello: Ford Mustang Boss Party!

Topher Grace and Joe Manganiello celebrate the return of the Ford Mustang Boss on Thursday (June 9) at the W Hollywood in Hollywood.

The two actors sipped on Appleton Estate Rum cocktails at the bash, which also benefited The Art of Elysium.

Also pictured: Brothers and Sisters star Matthew Rhys.

Check out Joe‘s faux public service announcement over at E! Online to help fans suffering from TBW – True Blood withdrawal.

“HBO has created TBWithdrawal.com,” he says in the video. “Makes waiting [for the new season premiere] suck a lot less.”