's Filmography 
| Film | |||
|---|---|---|---|
| Year | Film | Role | Notes |
| 2001 | Human Nature | Young Lila Jute | |
| 2003 | Agent Cody Banks | Natalie Connors | |
| The Lizzie McGuire Movie | Lizzie McGuire/Isabella Parigi | ||
| Cheaper by the Dozen | Lorraine Baker | ||
| 2004 | A Cinderella Story | Samantha "Sam" Montgomery (Cinderella) | |
| Raise Your Voice | Teresa "Terri" Fletcher | ||
| 2005 | The Perfect Man | Holly Hamilton | |
| Cheaper by the Dozen 2 | Lorraine Baker | ||
| 2006 | Material Girls | Tanzania "Tanzie" Marchetta | also Producer |
| 2008 | War, Inc. | Yonica Babyyeah | |
| 2009 | What Goes Up | Lucy Diamond | Premiered at the 3rd Annual Buffalo Niagara Film Festival |
| According to Greta | Greta | also Executive Producer | |
| 2010 | Stay Cool | Shasta O'Neil | Premiered at the 2009 Tribeca Film Festival |
| Provinces of Night | Raven Halfacre | [Post-production] [90] | |
| The Story of Bonnie and Clyde | Bonnie Parker | [Pre-production] | |
| unreleased | Foodfight! | Sunshine Goodness | (Voice only) |
| Films made for television or video | |||
|---|---|---|---|
| Year | Title | Role | Distributor |
| 1998 | Casper Meets Wendy | Wendy | 20th Century Fox Home Entertainment |
| 1999 | The Soul Collector | Ellie | CBS |
| 2002 | Cadet Kelly | Kelly | Disney Channel |
| 2004 | In Search of Santa | Crystal | Miramax Family Films |
| 2010 | Beauty and the Briefcase | Lane Daniels | ABC Family[91] |
| Television | |||
|---|---|---|---|
| Year | Title | Role | Notes |
| 2001–2004 | Lizzie McGuire | Lizzie McGuire | Lead role |
| 2009 | Gossip Girl | Olivia Burke | Recurring character (Season 3, Multiple Episodes) |
| Television guest appearances | |||
|---|---|---|---|
| Year | Title | Role | Notes |
| 2000 | Chicago Hope | Jessie Seldon | "Cold Hearts" (Season 6, Episode 17) |
| 2003 | American Dreams | Shangri-Las | "Change a Comin" (Season 2, Episode 8) |
| George Lopez | Stephanie | "Team Leader" (Season 2, Episode 22) | |
| 2004 | Frasier | Britney | "Frasier-Lite" (Season 11, Episode 12) |
| 2005 | Joan of Arcadia | Dylan Samuels | "The Rise & Fall of Joan Girardi" (Season 2, Episode 14) |
| George Lopez | Kenzie | "George's Grand Slam" (Season 4, Episode 19) | |
| 2007 | The Andy Milonakis Show | Herself | "Andy Moves to L.A." (episode 1, season 3) |
| 2009 | Ghost Whisperer | Morgan Jeffries | "Thrilled to Death" (Season 4, Episode 19) |
| Law & Order: SVU | Ashlee Walker | "Selfish" (Season 10, Episode 19) | |
