Thanks to Imdb.com

Actress: The Loss of a Teardrop Diamond (2008) (pre-production) .... Fisher Willow
I Know Who Killed Me (2008) (pre-production) .... Aubrey
The Best Time of Our Lives (2008) (pre-production) (rumored) .... Caitlin
A Woman of No Importance (2007) (pre-production)
Speechless (2007) (pre-production) .... Sara
Georgia Rule (2007) (completed) .... Rachel
Chapter 27 (2007) (completed) .... Jude
Friendly Fire (2006) (V)
Bobby (2006) .... Diane
Just My Luck (2006) .... Ashley Albright
A Prairie Home Companion (2006) .... Lola Johnson
Herbie Fully Loaded (2005) .... Maggie Peyton
Mean Girls (2004) .... Cady Heron
Confessions of a Teenage Drama Queen (2004) .... Mary Elizabeth Cep/Lola
Freaky Friday (2003) .... Anna Coleman
Get a Clue (2002) (TV) .... Lexy Gold
"Bette" (2000) TV Series (as Lindsay O' Lohan) .... Rose #1 (2000)
Life-Size (2000) (TV) .... Casey
The Parent Trap (1998) .... Hallie Parker/Annie James
... aka Disney's The Parent Trap (USA: complete title)
"Another World" (1964) TV Series .... Alexandra 'Alli' Fowler #3 (1996-1997)
... aka Another World: Bay City


Miscellaneous Crew:

The Princess Diaries 2: Royal Engagement (2004) (singer: "I Decide")
Confessions of a Teenage Drama Queen (2004) (singer: "A Day in the Life", "What Are You Waiting For" and "Drama Queen (That Girl) ")
Freaky Friday (2003) (singer: "Ultimate")


Producer:

Fashionistas (2005) (pre-production) (executive producer)


Herself:

'Mean Girls': Only the Strong Survive (2004) (V) .... Herself
The 56th Annual Primetime Emmy Awards (2004) (TV) .... Herself
On the Set: The Princess Diaries 2 - Royal Engagement (2004) (TV) .... Herself
2004 MTV Movie Awards (2004) (TV) .... Herself - Host
MTV Movie Awards 2004 Pre-Show (2004) (TV) .... Herself
Nickelodeon Kids' Choice Awards '04 (2004) (TV) .... Herself
The Teen Choice Awards 2003 (2003) (TV) .... Herself - presenter
2003 Much Music Video Music Awards (2003) (TV) .... Herself


Notable TV Guest Appearances:

"The Tony Danza Show" playing "Herself" (episode # 1.73) 4 January 2005
"Total Request Live" playing "Herself" 31 December 2004
"Ellen: The Ellen DeGeneres Show" playing "Herself" 16 December 2004
"Saturday Night Live" playing "Herself" (uncredited) (episode # 30.7) 11 December 2004
"Live with Regis and Kathie Lee" playing "Herself" 9 December 2004
"Total Request Live" playing "Herself" 7 December 2004
"That '70s Show" playing "Danielle" in episode: "Mother's Little Helper" (episode # 7.7) 10 November 2004
"Film '72" playing "Herself" 11 October 2004
"The Mysti Show" playing "Herself" (episode # 1.12) 3 July 2004
"Last Call with Carson Daly" playing "Herself" 24 June 2004
"King of the Hill" playing "Jenny Medina" (voice) in episode: "Talking Shop" (episode # 8.22) 23 May 2004
"On-Air with Ryan Seacrest" playing "Herself" 17 May 2004
"Jimmy Kimmel Live" playing "Herself" 5 May 2004
"Last Call with Carson Daly" playing "Herself" 4 May 2004
"Saturday Night Live" playing "Host" (episode # 29.18) 1 May 2004
"Late Night with Conan O'Brien" playing "Herself" 30 April 2004
"The View" playing "Herself" 29 April 2004
"Total Request Live" playing "Herself" 23 April 2004
"The Early Show" playing "Herself" 16 April 2004
"Live with Regis and Kathie Lee" playing "Herself" 18 February 2004
"Tinseltown TV" playing "Herself" 31 January 2004
"The Sharon Osbourne Show" playing "Herself" 16 December 2003
"The View" playing "Herself" 16 December 2003
"Punk'd" playing "Herself" (episode # 2.8) 14 December 2003
"The Sharon Osbourne Show" playing "Herself" 12 December 2003
"Super Short Show" playing "Herself" in episode: "Freaky Friday" (episode # 1.14) 4 December 2003
"20/20" playing "Herself" 29 December 2002