Thoroughly Modern Millie finally opened on Broadway at the Marquis Theatre in 2002, to many positive reviews.
The New York Daily News reviewer described her thus: "newcomer Sutton Foster, who has the pert look, the silver voice and the dazzling legwork to make an extraordinarily winning Millie." Clive Barnes, reviewing for the New York Post wrote "Newcomer Sutton Foster's own star turn as Millie is perfectly charming, but as a star she doesn't twinkle, glitter or light up Broadway like a Christmas tree defying a July noon.
She also guest-starred in an episode of the NBC legal drama Law & Order: SVU, which aired on March 3, 2010 opposite comedian Kathy Griffin.
Foster's final performance was on March 11, 2012, when she was replaced by Stephanie J. Foster left to film the television comedy-drama Bunheads, which premiered on ABC Family on June 11, 2012.
Her brother, Hunter is writing the music for this musical.
Foster made her Off-Broadway debut in Paul Weitz's comedy Trust with Zach Braff, Bobby Cannavale and Ari Graynor which began previews July 23, 2010 with an official opening August 12, running through September 12, 2010 at Second Stage Theatre.
The musical had a pre-Broadway run at the Ahmanson Theatre, Los Angeles in November to December 2005.
Foster left the musical in 2007 and co-starred in Mel Brooks' musical adaptation of his film Young Frankenstein as the Swedish yodeling fraulein Inga, first at the Paramount Theatre and then on Broadway from October 2007 to July 2008.
Her other Broadway credits include Little Women, The Drowsy Chaperone, Young Frankenstein, Shrek the Musical, and Violet.
On television, Foster played the lead role in the short-lived ABC Family comedy-drama Bunheads from 2012 to 2013.
Upon leaving, Foster did a concert version of Snoopy!
The Musical and returned to the Pittsburgh Civic Light Opera for a production of Me and My Girl to wrap up the year.
She played her final performance on January 3, 2010, when the show closed on Broadway.