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LOS ANGELES, CA - DECEMBER 11: TRON Sirens pose on the blue carpet during Walt Disney's 'TRON: Legacy' World Premiere held at the El Capitan Theatre on December 11, 2010 in Los Angeles, California. (Photo by Alberto E. Rodriguez/WireImage)

LOS ANGELES, CA - DECEMBER 11:  TRON Sirens pose on the blue carpet during Walt Disney's 'TRON: Legacy' World Premiere held at the El Capitan Theatre on December 11, 2010 in Los Angeles, California.  (Photo by Alberto E. Rodriguez/WireImage)