Jennifer Lawrence and Bradley Cooper
Alberto E. Rodriguez/WireImage

Serena co-stars Jennifer Lawrence (in Narciso Rodriguez) and Bradley Cooper reunited at the Hollywood Foreign Press Association’s annual installation luncheon, held at the Beverly Hills Hotel. Cooper kicked off the afternoon by introducing the HFPA’s President, while Mad Men star Christina Hendricks accepted grants on behalf of documentary programs. The event served for a good cause, too, with the HFPA donating over $1.5 million to non-profit entertainment-related organizations and scholarship programs. Click through the gallery to see more stars at this week’s hottest parties.

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— Lindzi Scharf