Christie Brinkley — supermodel, ex wife of Billy Joel, TV aerobics pitchwoman. Broadway musical star. Huh? Gorgeous Christie is 57, looks 20 years younger, and has never sung or danced in public. But a few weeks ago she joined the cast of the musical, “Chicago,” now in its 400th year on Broadway. She’s playing Roxy Hart, the streetwise married dame who shoots and kills her lover because he wan…
SOURCE: ShowBiz 411 at 02:02AM on June 8, 2011