Mark Zuckerberg celebrated the 40th birthday of his wife, Priscilla Chan, cosplaying as a pop star ... The outfit was the same one worn by "Beautiful Things" singer Benson Boone at the 2025 ...

Despite his fame and fortune, Zuckerberg rarely appears at public events, and when he does, Priscilla is often by his side.

Priscilla Chan marked her 40th birthday in grand style ... He didn't hesitate to show off his beautiful wife on one of her most important days, showering her with attention and gifts.

Priscilla Chan, the billionaire's wife of 13 years, seemed to take it in stride — even as he leapt off the piano, recreating Benson Boone's stunning performance at the Grammys a week prior.