Pop superstar Billy Joel had his Broadway moment in 2002 with Movin’ Out, the fabulous dance musical based on his hits, and now his ex-wife and pal Christie Brinkley is having hers as Roxie Hart in Chicago. On June 11, the Piano Man joined daughter Alexa Ray and Brinkley’s younger kids at the Ambassador Theatre, then stepped backstage to pose for photos with the happy star and her fellow merry murderesses! Click on and enjoy.