
The TikTok video showed Brinkley smiling brightly and dancing along to the song with a friend as she appeared on a jumbo screen for the whole audience to see. She gazed up at the stage, presumably at Joel, 74, as he sang, People report.
"Billy Joel wrote 'Uptown Girl' about his then-partner Christie Brinkley," read text over the fan video. "Tonight she watched him sing the song he wrote about her to all of Madison Square Garden."
@gnarcar_ 40 years later and your ex man is still grinning at you like that while he sings the song he wrote about how rich and hot you are? Voodoo clam #fyp #billyjoel #christiebrinkley #madisonsquaregarden

Joel released the hit in 1983. Per supermodel Elle Macpherson, the singer was dating her at the time he started writing the song, but he broke up with her mid-process and it was Brinkley who starred in the music video.
“I think it’s [about] all the uptown girls, put it that way,” Macpherson, 60, said of the song in a 2018 episode of Watch What Happens Live, adding of Joel, “He liked tall girls.”
Macpherson also said that the musician "ousted" her from a Manhattan apartment when he began dating Brinkley exclusively.
Billy Joel' is now married with Alexis Roderick, they tied the knot in a surprise Fourth of July ceremony in 2015.
The pair wed in 2015 — marking Joel's fourth marriage. Roderick and the "Piano Man" singer went on to welcome daughters Della Rose and Remy Anne. The former competitive equestrian is also a stepmom to Joel's eldest daughter, Alexa Ray, whom he shares with ex-wife Christie Brinkley. (People)
The couple have been together for over a decade and prefer to keep their relationship private. Even their 2015 summer wedding was a surprise to family and friends.
Roderick is an accomplished equestrian. She used to compete competitively and is an active member of the United States Equestrian Federation.
Billy Joel's three previous wives stole his heart and money. He spent much of his life battling his ex-wives, alcohol, bad managers and bankruptcy.

Even though Joel has played the storied New York arena close to 150 times in his six-decade career, his March 28 concert marked the 100th show of his residency, a milestone commemorated onstage with pals Jerry Seinfeld and Sting.
