Willie Nelson performs for Miranda Kerr, Orlando Bloom, Emmy Rossum and more at Global Green USA's Pre-Oscar bash; Jennifer Lawrence, Bradley Cooper, Amanda Seyfried, Anne Hathaway and many more notables attend two separate Vanity Fair Campaign Hollywood events at Chateau Marmont and Eveleigh; Jessica Chastain, David O. Russell and others attend TheWrap's annual pre-Oscar party; David Arquette, Kate Upton, and Topher Grace are among the guests at The Art Of Elysium's Pieces Of Heaven Auction—get caught up on Wednesday's top L.A. events in this installment of Last Night's Parties.
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