Made debut in a TV commercial for Wisk at age three

Had a recurring role on the Nickelodeon series "Clarissa Explains It All"

Cast as Lily, an autistic child, on the ABC daytime drama "All My Children"

Joined Nickelodeon's "The Adventures of Pete and Pete" in a recurring role

Feature debut as the lead in "Harriet the Spy"

Made TV-movie debut, "Christmas in My Hometown" (CBS)

Played Maggie Parker on the CBS sitcom "Meego"

Had featured role in the live-action feature, "Inspector Gadget"

Joined the cast of "Buffy the Vampire Slayer" (WB, 2000-2001; UPN, 2001-2003) in the role of Dawn Summers

Cast in a recurring role on "Six Feet Under" (HBO) as a pop princess who hires Keith (Mathew St. Patrick) as a bodyguard

Starred in the comedy movie, "Eurotrip"

Played the title character in the family film, "Ice Princess" opposite Kim Cattrall

Guest-starred on NBC crime drama, "Law & Order: Criminal Intent"

Co-starred in the thriller "Black Christmas"

Cast in a multi-episode arc on the CW series, "Gossip Girl"