Hilary Erhard Duff (born September 28, 1987) is an American actress, singer-songwriter, entrepreneur, model, producer and author. She's best known for playing the role of Disney Channel's teen comedy Lizzie McGuire. On Two and a Half Men, she portrayed the character of Stacey, Walden's girlfriend, in the Season 10 finale "Cows, Prepare to be Tipped".


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