Hilary Erhard Duff (often mistakenly spelled as Hillary Duff) (born September 28, 1987) is an Americanactress and singer. She got famous by being in the television showLizzie McGuire. Since then, she has gone onto a movie career, with roles in mainstream pictures. Among the movies she plays in are Cheaper by the Dozen, The Perfect Man, A Cinderella Story, Raise Your Voice, Material Girls and independent movies such as War, Inc. and Greta. Duff has also ventured into a music career as a pop musician, releasing 8albums (for example Most Wanted, Dignity, Metamorphosis, Hilary Duff) and 15music videos (for example Reach Out, With Love, Stranger, Wake Up, So Yesterday, Come Clean). Lately she has also ventured into a fashion career as a designer for DKNY, with her new line Femme for DKNY.