Marshall, who earned raves for her performances in Jacques Brel Is Alive and Well and Living in Paris and The Baker's Wife, will be joined by I Love You, You're Perfect, Now Change cast members Jonathan Rayson, Frank Vlastnik and Amy White, as well as performers from Jump, Celia, 500 Clown, and William Finn's Make Me a Song. Paul Kreppel (My Mother's Italian, My Father's Jewish & I'm in Therapy!) hosts the weekly event at the 15th annual market. Performances take place at 4 PM in the midst of over 100 red-and-white booths offering holiday shoppers unique gifts and hand-made items. The holiday market officially kicked off Nov. 27 and has featured performances from Altar Boyz, The Fantasticks, Enter Laughing and Serenade. The performances will continue Dec. 21 with cast members from Naked Boys Singing and Wanda's World.

For further information on the Union Square holiday market, visit www.unionsquarenyc.org.