July 13, 2015 11:30 AM EDT

Taylor Swift and Nick Jonas performed “Jealous” at the Met Life Stadium in East Rutherford, New Jersey, Saturday night as part of her 1989 world tour. (This time, he didn’t wear a zebra mask.)

The two pop stars go way back:

Oh wow. Time flies when your having fun ha https://t.co/1PChbvLCsY

— Nick Jonas (@nickjonas) July 12, 2015

Unreal feeling jumping on stage with my friend @taylorswift13 tonight at the #1989TourEastRutherford show in my hometown

— Nick Jonas (@nickjonas) July 12, 2015

Swift is known for inviting celebrities to dance on stage with her. During a performance of “Style” that same night, she was joined by Uzo Aduba from Orange Is the New Black and models Candice Swanepoel, Lily Aldridge, Karlie Kloss, Behati Prinsloo and Gigi Hadid. The U.S. women’s soccer team rocked out with her Friday night, fresh from the ticker tape parade celebrating their World Cup win earlier that day in Manhattan.

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Write to Olivia B. Waxman at olivia.waxman@time.com.

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