Haylie Duff is an American actress and singer-songwriter best known for her starring role as Sandy Jameson on the family drama television series 7th Heaven, from 2005-2007.
Duff came to worldwide attention in 2004, winning the role as popular teen Summer in surprise hit Napoleon Dynamite. Her work in the film earned her a Teen Choice Award for Choice Movie Breakout Performance.
Coming off the success of Napoleon Dynamite, Duff fostered her film career with the release of Material Girls, which opened in theatres nationwide in August 2006. The next year she appeared in two independent films, the romantic coming-of-age story My Sexiest Year, also starring Harvey Keitel, and the dramatic comedy Legacy.
Her other film credits include Addams Family Reunion, I Love Your Work and the short film The Newman Shower.
Duff has also enjoyed an accomplished television career. In addition to her series regular role on 7th Heaven, her small screen credits include roles on the Emmy Award-nominated Joan of Arcadia, Boston Public, Chicago Hope, Third Watch and American Dreams, as well as several nationwide commercials, including Mattel's Barbie and Hershey's Ice Breakers.
Though Duff's first role was in the two-part mini-series True Women, she discovered her love of acting after winning a role in the Houston Ballet's staging of The Nutcracker. Soon after, she received her first screen credit with Goldie Hawn in her directorial debut, Hope.
Duff continues to gain musical achievement as a singer/songwriter. She wrote two of the hits on the WEA/Buena Vista release of Metamorphosis.
She also recorded the Go-Gos' hit Our Lips Are Sealed for the A Cinderella Story soundtrack, and will soon record a new version of Madonna's song Material Girl for the release of Material Girls.
Currently residing in Los Angeles, Duff enjoys spending time with her family, friends and beloved dogs. She is the sister of actress Hilary Duff.