| Year | Title | Role | Category |
| 2001- | Big Love | Delilah | Short Film |
| 2001 | Blow | Young Kristina Sunshine Jung | Movie |
| 2001 | America’s Sweethearts | Girl in Purple T-shirt (uncredited) | Movie |
| 2002 | Grand Champion | Sister | Movie |
| 2003 | Spymate | Amelia Muggins | Movie |
| 2004 | Drake e Josh | Addie Singer | TV Series |
| 2004-2007 | Unfabulous | Addie Singer | TV Series |
| 2006 | Aquamarine | Claire Brown | Movie |
| 2006-2012 | Punk’d | Herself | TV Series |
| 2007 | The Hills | Herself | TV Series |
| 2007 | Nancy Drew | Nancy Drew | Movie |
| 2008 | Wild Child | Poppy Moore | Movie |
| 2008 | Lymelife | Adrianna Bragg | Movie |
| 2008 | The Flight Before Christmas | Wilma | Voice Role | Movie |
| 2009 | Hotel for Dogs | Andi | Movie |
| 2009 | The Winning Season | Abbie Miller | Movie |
| 2010 | Jonas L.A. | Herself | TV Series |
| 2010 | Twelve | Molly Norton | Movie |
| 2010 | Valentine’s Day | Grace Smart | Movie |
| 2010 | Memoirs of a Teenage Amnesiac | Alice Leeds | Movie |
| 2010 | 4.3.2.1. | Joanne | Movie |
| 2010 | It’s Kind of a Funny Story | Noelle | Movie |
| 2010 | Virginia | Jessie Tipton | Movie |
| 2011 | Take Two with Phineas and Ferb | Herself | TV Series |
| 2011 | Extreme Makeover: Home Edition | Herself | TV Series |
| 2011 | The Art of Getting By | Sally Howe | Movie |
| 2011 | Scream 4 | Jill Roberts | Movie |
| 2012 | Celeste and Jesse Forever | Riley Banks | Movie |
| 2013 | Empire State | Nancy Michaelides | Movie |
| 2013 | Family Guy | Amanda Barrington (voice) | TV Series |
| 2013 | We’re the Millers | Casey Mathis / Casey Miller | Movie |
| 2013 | Palo Alto | April May | Movie |
| 2013 | Adult World | Amy Anderson | Movie |
| 2014 | Delirium | Lena Haloway | TV Series / Pilot |
| 2013-2014 | American Horror Story: Coven | Madison Montgomery | TV Series |
| 2014-2015 | American Horror Story: Freak Show | Maggie Esmerelda | TV Series |
| 2015 | I Am Michael | Rebekah Fuller | Movie |
| 2015 | Ashby | Eloise | Movie |
| 2015 | The Blackcoat’s Daughter | Joan Marsh | Movie |
| 2015-2016 | Scream Queens | Chanel Oberlin | TV Series |
| 2016 | Nerve | Venus “Vee” Delmonico | Movie |
| 2017 | American Horror Story: Cult | Serena Belinda | TV Series |
| 2017 | Who We Are Now | Jess | Movie |
| 2018 | In a Relationship | Hallie | Movie |
| 2018 | Billionaire Boys Club | Sydney Evans | Movie |
| 2018 | American Horror Story: Apocalypse | Madison Montgomery | TV Series |
| 2018 | Little Italy | Nicoletta “Nikki” Angioli | Movie |
| 2019 | Paradise Hills | Uma | Movie |
| 2019 | UglyDolls | Wedgehead (Voice) | Movie |
| 2019 | American Horror Story: 1984 | Brooke Thompson | TV Series |
| 2020 | The Hunt | Yoga Pants | Movie |
| 2020 | Holidate | Sloane Benson | Movie |
| 2021 | About Fate | Margot Hayes | Movie |
| 2022 | Abandoned | Movie | |
| 2022 | Returns | Movie |