Beyoncé and Taylor Swift dance and sing along as Jay Z hits the stage for surprise performance at Justin Timberlake's concert

Fans got quite a treat at Justin Timberlake’s concert as part of his The 20/20 Experience Tour in New York City on Sunday.

The singer was joined on stage for a surprise performance with Jay Z, as none other than Beyoncé and Taylor Swift watched from the audience.

Taylor spun around to laugh with Beyoncé as they sang along and danced to Holy Grail from the VIP section together.

Surprise!: Jay Z joined Justin Timberlake for a performance during his The 20/20 Experience Tour in New York City on Sunday

The duo looked like they were having a great time during the evening, in a video captured by an Instagram user.

Taylor was clad in a black top and shiny silver skirt, while Beyoncé wore a tight printed black and white dress as she cheered on her husband.

The two superstar singers were joined by Haim sisters Este, Danielle and Alana, according to Just Jared.

Beyonce and Taylor Swift at Justin Timberlake gig together!

Special guests: Beyonce and Taylor Swift were seen watching the concert together from the VIP section

Two of their biggest fans: The singers danced and sang along as Jay Z and Justin performed their single Holy Grail

Justin, 33, welcomed pal Jay Z, 45, on stage while performing at the Barclays Center in Brooklyn.

The pair have been close friends for some time now and last year they co-headlined the Legends Of The Summer Stadium Tour from June to August.

Jay Z’s song Holy Grail, which Justin - whose wife Jessica Biel is rumoured to be expecting their first child together - features on, came out last July.

Almost there: Justin, 33, will finish up his tour on January 2 after 14 months of being on the road

Famous friends: The trio were amongst the guests at Taylor's 25th birthday party on Friday

Taylor Swift and Haim hula dancing at Justin Timberlake gig

Justin’s The 20/20 Experience Tour kicked off in November 2013 and will finally be coming to an end on January 2, when he does his final performance in Las Vegas.

On Friday, Beyoncé, Jay Z and Justin were amongst the many celebrity guests at Taylor’s 25th birthday party.

Also joining the Blank Space singer at her New York City pizza party were Selena Gomez, Karlie Kloss, Sam Smith, Nick Jonas and Chrissy Teigen.

Their new BFF: Jay Z and Beyonce were seen leaving the birthday girl's Tribeca apartment after the pizza party

Off he goes: Justin was also spotted heading home from the star-studded bash, where Selena Gomez and Karlie Kloss were in attendance too