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The countdown to October 31st has begun! Halloween is “creeping” up on us, and pre-celebrations are in full swing. Jessica Alba visited Mr. Bones Pumpkin Patch in West Hollywood, as did Heidi Klum, who got into the spirit wearing a a spiderweb-covered cardigan. Their kids enjoyed face painting and other spook-inspired activities. Meanwhile, Katy Perry hopped on a haunted hayride in Los Angeles—bright orange poncho and all. Click through the gallery to see all the stars painting October orange and black!