The wine was flowing and the guests were famous backstage at End of the Rainbow’s “Rainbow Room” on April 25: Joan Rivers, Martin Short, Andrea Martin, Isabella Rossellini and more took in the performance New Yorkers can’t stop talking about, Tracie Bennett as Judy Garland. After Bennett’s melancholy rendition of “Over the Rainbow,” the famous guests made their way backstage to congratulate Bennett and toast the British star. Click below to share in the backstage celebration, and get your tickets now to see Bennett bring down the house at Broadway's Belasco Theatre.