David Carradine

Daryl Hannah and Lucy Liu were among the hundreds of costars, family and friends — some dressed in an array of styles from kilts, American Indian headdresses and cowboy boots — who gathered in a Los Angeles cemetery chapel to mourn David Carradine.

Hell's Angels motorcyclists accompanied a white hearse containing Carradine's casket to the invitation-only funeral at the Forest Lawn-Hollywood Hills cemetery, where the actor was also buried Saturday.

Among the 400 also on hand for the two-hour ceremony were Jane Seymour, Tom Selleck, Frances Fisher, Edward James Olmos, Ali Larter, James Cromwell and Rob Schneider.

"It was touching, but light-hearted," Carradine's brother, Bruce, told People. "There weren't a lot of tears, but there was a lot of laughter."

Carradine, 72, was found hanging in a Bangkok hotel room on June 4. As authorities continue to investigate his death, an independent forensic pathologist hired by the Carradine family has ruled out suicide.