Masterson's performance career began as a dancer which she gave up at age 11 after being cast in The New Adventures of Pippi Longstocking.
[1] Masterson started her acting career as a child actress at age 14 with her first appearance as Head Girl in "The New Adventures of Pippi Longstocking", a fantasy-adventure, musical, family film based on the books by the late Astrid Lindgren.
[3] In 1986 she was interviewed by a stand-in presenter Kenneth Williams on the British tv show Wogan.
[4] These roles include guest appearances on the television series Jupiter Moon (1990 and 1996), Casualty (1993),[3] Game On (1996) and The Ruth Rendell Mysteries (1991).
She has appeared in American films including The Power of One (1992),[5] The Man Without a Face (1993)[6] and A Christmas Carol (2009).