TV: Past CHICAGO Stars Usher, Brooke Shields, Jennifer Nettles & More Send 20th Anniversary Love

CHICAGO, Broadway's longest running American musical, just held a celebratory cocktail reception yesterday at New York City's The Palm Restaurant West Side location to officially launch the show's 20th anniversary year. Lead producer Barry Weissler addressed the crowd to toast the occasion and announce initiatives taking place over the next year in the lead-up to the official anniversary celebration and performance this November.

Below watch as current Broadway casts and some of CHICAGO's own celebrity alumni send birthday wishes to the production!

Set amidst the razzle-dazzle decadence of the 1920s, Chicago is the story of Roxie Hart, a housewife and nightclub dancer who murders her on-the-side lover after he threatens to walk out on her. Desperate to avoid conviction, she dupes the public, the media and her rival cellmate, Velma Kelly, by hiring Chicago's slickest criminal lawyer to transform her malicious crime into a barrage of sensational headlines, the likes of which might just as easily be ripped from today's tabloids.