Walsh, 42, and studio executive Alex Young, 38, finalized their divorce on Monday, according to TMZ.com. Reps for Walsh did not immediately respond for comment regarding the divorce.
Young filed for divorce from Walsh in December 2008, citing irreconcilable differences. The couple, who were married only 15 months, tied the knot after dating for three months.
Meanwhile, Walsh is planning her off-Broadway debut this summer. She'll star in Dusk Rings a Bell from May 19 through June 20, opposite Paul Sparks.