Christie Brinkley Beams as Ex Billy Joel Serenades Her Mid-Concert
There's no bad blood between exes Christie Brinkley and Billy Joel ... as the former spouses shared a sweet moment over the weekend -- where Bill was singing to her once again.
The supermodel attended her ex-hubby's concert at MSG Friday -- where she was filmed dancing along to Billy's hit "Uptown Girl" ... which was written about Christie back in the day.
Check it out ... Christie is seen grinning widely and swaying back and forth on the Jumbotron while watching her ex sing out his hit song. On its face, she was all about it.