Their marriage ended in a divorce in 1994, nine years after they wed, but music legend Billy Joel and model Christie Brinkley will continue to be friends until the end.

Case in point: She was spotted dancing in the front row at his Madison Square Garden concert this week while he sang "Uptown Girl" during his four-song encore.

Mashable, in the audience Thursday night, saw the "Piano Man" singer waving down his camera crew to capture the moment. Soon, a dancing Brinkley and her smiling face were displayed on the large screens in the stadium, inciting cheers and applause.

Brinkley shared this Instagram photo from the show with the caption, "He's still got it!"

She memorably starred in the 1983 music video for "Uptown Girl":

While married, the couple had one daughter together.

Most recently, after Joel's mother died last month, Brinkley wrote an emotional tribute to her late ex-mother-in-law Rosalind Nyman Joel on Instagram: "At sad times we look for ways to find the good to lift our spirits, so I have only to imagine what Rosalinda's Eyes have seen to find cause to celebrate a life well lived," Brinkley, 60, wrote to accompany this photo.

Joel, 65, was performing for a sold-out crowd as part of his monthly residency at Madison Square Garden, where in December he was named as a new franchise, meaning he'll do a concert every month until he can't attract massive crowds to the venue.

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