Singer turned Broadway actress Michelle Williams joined the cast of “Chicago” on Broadway at the Ambassador Theater Monday (Feb 8) in New York City. She’ll continue the role through March 28th.

Williams first took on the role as “Roxie Hart” last year in the London production of the musical and she was so good that they brought her back to do the U.S. version of the show for select dates. More pics of Michelle doing her thing on stage and hanging out with Star Jones and Jay-Z at the after party below…

PHOTOS: GETTY IMAGES

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