Scott Caan, Sugar Ray Leonard and Joe Pesci hit the green at 10th Annual James Caan Golf Classic to benefit the Impact Treatment Center; Diane Kruger, Rachel Zoe, Emma Roberts, Zoe Saldana and many more of Hollywood's most stylish attend a dinner hosted by MAC Cosmetics and Vogue celebrating Prabal Gurung at Chateau Marmont; Annette Bening, Jackson Browne, Rita Wilson and others honor Billy Crystal the annual Backstage at the Geffen Gala; Ellen DeGeneres and Samuel L. Jackson join Steve Harvey at his Hollywood Walk of Fame star presentation ceremony—from golf courses to exclusive dinner parties, get the rundown on Monday's top events in this installment of Last Night's Parties.
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