Photo SpecialStars In Masks!

Who's that pig? See Keira Knightley and other stars (Britney! Celine!) wearing wacky masks

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MICHAEL JACKSON

The Gloved One became the Hooded One during a shopping spree on Melrose in L.A.

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Credit: WENN;MJ Kim/Getty (inset)

Updated: Thursday Apr 10, 2008 | 06:00 AM EDT

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