Jay-Z brings out Beyoncé and Blue Ivy, 14, at ‘Reasonable Doubt’ 30th anniversary show

It’s a family affair.

Jay-Z brought out his wife, Beyoncé, and their eldest child, Blue Ivy, for surprise performances during the rapper’s “Reasonable Doubt” 30th anniversary show.

On Friday night, the “99 Problems” rapper, born Shawn Carter, kicked off the first of three shows at Yankee Stadium in the Bronx, New York.

During his performance of “Can’t Knock The Hustle,” Beyoncé took the stage to sing Mary J. Blige’s part of the song.

The “Drunk In Love” singer, 44, stunned in a custom Giuseppe di Morabito blazer and tailored capri pants, which were entirely embellished with oversized crystal pinstripes.

The longtime couple — who tied the knot in 2008 — shared a kiss before Beyoncé exited the stage.

Blue, 14, later joined her famous dad onstage and played the piano for his 1996 song “Feelin’ It.”

Jay said, “Make some noise for the legendary Blue Ivy Carter,” as the sold-out audience cheered and clapped for the teen.

During an interview with GQ in March, the Roc Nation co-founder, 56, revealed that Blue was a “crazy pianist.

“She won’t let us get her a teacher. She doesn’t want it to be a job. But she has perfect pitch. If she hears a song, she’ll be like, ‘Play it again,’ and then she’ll teach herself,” he shared.

“That’s just talent. She doesn’t work at that. She worked at this, and it makes me proud that she fought for something that she really wanted to do,” Jay added.

“I don’t think we’re going to be able to get her off that stage now.”

Jay’s concert series continues at Yankee Stadium Saturday night — with a dedicated concert honoring the 25th anniversary of his 2005 album, “The Blueprint” — and Sunday, when the emcee will perform an expanded, catalog-spanning setlist.