Filmszerepek

• Outward Blonde (2005).... Marie
• Perfect Man, The (2004) .... Holly Hamilton
• Raise Your Voice (2004).... Terri Fletcher
• Cinderella Story, A (2004) .... Sam Montgomery
• Tucatjával olcsóbb (2003) .... Lorraine Baker
• Csáó, Lizzie! (2003) .... Lizzie McGuire/Isabella
• ÖcsiKÉM (2003) .... Natalie Connors
• Cadet Kelly (2002) (TV) .... Kelly Collins
• Human Nature (2001) .... fiatal Lila Jute ... aka Human Nature (2001) (France) (USA)
• "Lizzie McGuire" (2001) TV Series .... Lizzie McGuire
• Soul Collector, The (1999/I) (TV) .... Ellie
• Casper és Wendy találkozása (1998) (TV) .... Wendy

Filmzenék

• Cinderella Story, A (2004) (singer: "Come Clean”)
• Lizzie McGuire Movie, The (2003) (singer: "Why Not", "Girl in the Band" and "What Dreams Are Made Of")
• Right On Track (2003) (TV) (singer: "I Can't Wait") (uncredited)
• TélApu 2, The (2002) (singer: "Santa Claus Lane")
  ... aka SC2 (2002) (USA: promotional abbreviation)
  ... aka Santa Clause 2 (2002) (UK: poster title)
  ... aka Santa Clause 2: The Mrs. Clause, The (2002) (USA)
• "Lizzie McGuire" (2001) TV Series (singer: "I Can't Wait")

Saját maga

• Freestyle (with Brian Friedman) (2004) (V) .... speciális vendég
• TMF Awards 2004 (2004) (TV) .... előadó - legjobb újonc nyertes/fellépő
• 46th Annual Grammy Awards, The (2004) (TV) .... díjátadó
• 31st Annual American Music Awards, The (2003) (TV) .... fellépő
• Hilary Duff: All Access Pass (2003) (V) .... fellépő
• 2003 Radio Music Awards (2003) (TV) .... fellépő
• MTV Video Music Awards 2003 (2003) (TV) .... fellépő
• 2003 Teen Choice Awards (2003) (TV) .... fellépő
• 2003 MTV Movie Awards (2003) (TV) .... fellépő
• 16th Annual Aria Music Awards, The (2002) (TV) .... fellépő
• "Express Yourself" (2001) TV Series .... fellépő

Jelentős TV vendég-fellépő

• "Ministry of Mayhem" (2004) playing "Herself" 10 April 2004
• "Today with Des & Mel" (2002) playing "Herself" 8 April 2004
• "Real Access" (2003) playing "Herself" in episode: "Blonde Ambition" (episode # 1.10) 12 March 2004
• "On-Air with Ryan Seacrest" (2003) playing "Herself - Cameo" 4 February 2004
• "Frasier" (1993) playing "Britney" (voice) in episode: "Frasier-Lite" (episode # 11.12) 6 January 2004
• "Live with Regis and Kathie Lee" (1989) playing "Herself" 15 December 2003
• "American Dreams" (2002) playing "Shangri-Las" in episode: "Change a Comin" (episode # 2.8) 23 November 2003
• "Punk'd" (2003) playing "Herself" (episode # 2.1) 26 October 2003
• "Frank Skinner Show, The" (1995) playing "Herself" (episode # 7.2) 13 October 2003
• "Diary" (2000) playing "Herself" in episode: "Hilary Duff: In the Driver's Seat" 4 September 2003
• "Live with Regis and Kathie Lee" (1989) playing "Herself" 27 August 2003
• "Good Morning America" (1975) playing "Herself" 2 May 2003
• "Live with Regis and Kathie Lee" (1989) playing "Herself" 2 May 2003
• "Total Request Live" (1998) playing "Herself" 1 May 2003
• "George Lopez" (2002) playing "Cosmetics Saleswoman" in episode: "Team Leader" (episode # 2.22) 30 April 2003
• "Tonight Show with Jay Leno, The" (1992) playing "Herself" 21 April 2003
• "Star Search" (1983) playing "Herself" 2 March 2003
• "Good Day L.A." (1993) playing "Herself" 3 January 2003
• "Chicago Hope" (1994) playing "Jessie Seldon" in episode: "Cold Hearts" (episode # 6.17) 30 March 2000