Billy Joel and Christie Brinkley divorced 20 years ago, but they clearly still have love for each other, as Joel went to great lengths to demonstrate recently.

During Joel's Aug. 7 concert at Madison Square Garden in New York, he sang one of his biggest hits, "Uptown Girl."

As any fan knows. Brinkley starred in the music video.

Thirty years later, Joel dedicated the song to her.

Brinkley clearly enjoyed it. She Instagrammed a picture of herself beaming up at the stage with the caption "he's still got it!"

Check out the adorable video of Joel singing to Brinkley.