The Grey's Anatomy star has a good laugh during an outing in L.A. Plus: Lindsay Lohan, the Cheetah Girls and more

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YULETIDE CHEER

Disney star Miley Cyrus gives an explosive performance of "All I Want For Christmas Is You," during a taping for the Walt Disney World Christmas Day Parade in Anaheim, Calif., on Sunday. The special airs Christmas morning on ABC.