Celebs Keep The Halloween Festivities Going! (PHOTOS)

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Cassie worked a Cleopatra look as her man Diddy went for Prince at the Halloween party at the Playboy mansion last night.

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We first saw celebs making their Halloween costume debuts yesterday but they are keeping the ball rolling with even more and more get-ups and festivities for the spooky holiday.

PHOTOS: The Ladies Of Hollywood Kick Off The Halloween Festivities

Cassie shared a photo of her and her man Diddy. She ruled a super cute Cleopatra costume while her boo went for the look of Prince. The lovebirds attended the grand Halloween Bash at the Playboy mansion.

Our very own Russell Simmons was also in the house and you guessed it! He dressed up in classic Run-DMC attire.

Over in Las Vegas, J Woww and her soon to be husband Roger, were guidos dressed as nerds!

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Christina Aguilera, Paris Hilton, Aubrey O' Day and more turned up the sexy with their costumes.

The Halloween festivities are off to a great run we can't wait to see more and more!

Check out the looks from last night in the accompanying gallery.