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Mariah Carey didn’t hesitate showing off her foxy gams when she tweeted a picture of herself next to her red and silver tinsel-covered Christmas tree!  Meanwhile, Kourtney Kardashian decorated her tree with giant, sparkly purple bulbs. (Of course!)  Ashley Tisdale sweetly showed off her work-in-progress, posting a TwitPic of her mother on a ladder, adjusting the last whirl of a garland. Our sentimental favorite? First Lady, Michelle Obama, who was photographed debuting the White House tree to a gaggle of adorable elementary school children! Click through the gallery to see more celebrities showing off their trees.

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