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Brett Ratner knows how to party!

The famous director's guest list for his Memorial Day beach bash in Malibu included some of Hollywood's biggest starts, and Robert Downey Jr., Gwen Stefani and Gavin Rossdale, Courteney Cox and Coco Arquette, Ashley Greene, Kate Beckinsale, Dianna Agron and Barbara Streisand were all on the list.

The A-listers were seen flocking on the beach outside of Ratner's posh house, and he even rented a big bounce house to entertain the celeb kids!

The Hollywood heavyweight is jetting to Cannes in the morning to enjoy the remainder of the Film Fest, after hitting up a few parties, but he had a little setback while preparing for his trip. Ratner Tweeted on Monday, "I was so upset the Hermes store was closed today... I'm leaving in the morning. See u next time!!"

We hate when that happens!

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