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Celebs got into the Halloween spirit this past weekend.

Mariah Carey and husband Nick Cannon went with an angel motif while Kelly Osbourne and her boyfriend dressed up as eggs and bacon. Christina Aguilera and her son Max dressed as skeletons while Heidi Klum and hubby Seal were virtually unrecognizable in matching black crow costumes. New Moon star Kellan Lutz channelled his inner superhero while Paris Hilton shocked absolutely nobody by wearing next to nothing with her on-again boyfriend Doug Reinhardt as the tooth fairy.