Christie Brinkley and Billy Joel Reunite Backstage After MSG Show

The Uptown Girl and the Piano Man were back together on Saturday night and never looked better!

Christie Brinkley hit up Billy Joel's concert at Madison Square Garden where she had front row seats to watch their daughter, Alexa Ray Joel, perform "My Baby Grand" with Billy himself!

!instagram-embed(https://www.instagram.com/p/Bji09urH9xh/)

Brinkley was incredibly proud of her daughter's performance and posted several videos from her prime location.

After the show, Brinkley and Joel posted for a pic backstage, which she captioned "The Proud Parent[s]."