Hollywood's elite came out in Hollywood on Sunday, for an emotional farewell to one of their own, veteran publicist Ronni Chasen, RadarOnline.com can report.

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Many of the town's most powerful studio heads and producers were there. So were several of her prominent movie music clients, including the great composer Hans Zimmer. The biggest names in publicity also attended, several of whom spoke at the ceremony.

On the acting side, Peter Fonda, Frances Fisher and Elliott Gould were spotted in the crowd of over 600.

As RadarOnline.com was the first to report, Chasen was gunned down execution-style at 1:30 am Tuesday as she drove home from the Burlesque premiere and after-party.  As she traveled through Beverly Hills on the way to her West Los Angeles high rise condo, she was gunned down.

PHOTO: Last Picture Of Slain Ronni Chasen

Chasen, a highly respected movie publicist, specialized in representing movie music, and the composers and producers who made the magic happen.

Among her final projects was the upcoming Oscar campaign for Alice In Wonderland, produced by her close friends Lili Fini Zanuck and her husband Richard Zanuck, who was a pallbearer at today's burial.

Police have ruled Chasen's death a homicide.

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