Oscar madness is in full swing -- and last night there was not one, but three, different, celeb-packed pre-parties went down in Hollywood.

Miranda Kerr and Orlando Bloom packed on the PDA at the Global Green bash at Avalon, where the sexy model was seen grabbing her man's behind on the red carpet ... and later tried locking lips with him inside the party.

Other stars at the bash included Sophia Bush, Emmy Rossum, Luke Perry and Dylan McDermott.

While Vanity Fair is known for their Academy Award after-party, their two pre-ceremony soirees were pretty memorable too.

"Silver Linings Playbook" stars Jennifer Lawrence, Bradley Cooper, Chris Tucker and Jacki Weaver all attended one party celebrating the flick, while another celebrating "Les Miserables" was attended by Anne Hathaway, Amanda Seyfried and Eddie Redmayne.

Check out all the pre-party pics above.

And be sure to come back Sunday, February 24 at 6pm Eastern/3pm Pacific for our Oscar coverage -- including red carpet photos and show moments.

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