Christie Brinkley Attends Ex-Husband Billy Joel's Concert, Dances to 'Uptown Girl'
Following the show, Brinkley shared a video filled with snippets from the concert including her dancing to "Uptown Girl," the moment their daughter, Alexa, surprised Joel with a performance of "To Sir With Love," and singing along with her 25-year-old daughter, Sailor Brinkley Cook.