Miller
Showest has tapped Sienna Miller as supporting actress of the year.
Showest will be held March 30-April 2 in Las Vegas. Miller will be presented with the award at the event's final-night banquet ceremony.
Previous Showest supporting actress honorees include Judi Dench, Angelina Jolie and Rachel McAdams.
Miller will next be seen in "G.I. Joe: The Rise of Cobra," skedded for release Aug. 7.
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