Trump DJs during star-studded Thanksgiving dinner at Mar-a-Lago with guests including Sylvester Stallone, Bill Belichick

President-elect Donald Trump played DJ in chief at his private club Mar-a-Lago on Thanksgiving —spies told Page Six — as his BFF Elon Musk grooved at his VIP table.

Also at the Thanksgiving dinner, sources said, was “Rocky” star Sylvester Stallone, 78, former Patriots coach Bill Belichick, 72, and his young girlfriend, Jordon Hudson, 24, as well as Trump’s family members including wife Melania and son Barron.

Said a source: “Melania looked very svelte and chic in a brown/orange fall colored dress with long sleeves with bursts of color in squares. Eric and Laura [Trump] were there, as was Elon Musk and his mother Maye, and Tiffany Trump and her husband.”

The source said: “Stallone came in around 8p.m. The Trump family arrived at 6:45p.m., and left at 9:15p.m. There were 300 people at the dinner — which was open to members and their guests.”

The insider added: “Trump played DJ all night and opened up with ‘YMCA,’ and went on to play Elvis hits and ‘Phantom of the Opera’ and ‘Ave Maria’ as his go-to songs. There were no speeches, but Elon was seen making a toast to the president and his family.”

Trump and his techie sidekick Musk were jubilantly belting out “YMCA,” according to an Instagram clip.

The bros bopped in their seats — with Trump playfully patting Musk’s back at Trump’s roped off table The Post reported.

Trump has been known to regularly DJ at the club where membership fees have soared past $1 million, we hear.

An insider said the Thanksgiving feast was about $350 a pop, including drinks.

“It was a lavish buffet with turkey and all the fixings, and literally everything else imaginable,” said the source, adding, “fall colored [arrangements] were on the table.”

In typically understated fashion, Trump posted on social media for the holiday: “Happy Thanksgiving to all, including to the Radical Left Lunatics who have worked so hard to destroy our Country.”