Following the boy band's reunion during Ariana Grande's set at the annual music festival, Timberlake took to Instagram to express his support for his former bandmates, Chris Kirkpatrick, Lance Bass, Joey Fatone and JC Chasez.
"You guys killed it last night ?," Timberlake praised alongside a selfie of the guys with Grande.
While Timberlake couldn't attend because he was busy playing the last show on his Man of the Woods Tour in Connecticut, Kirkpatrick, Bass and Fatone all took to social media to celebrate their performance with the "God Is a Woman" singer.
"And the icing on the cake is @arianagrande is a Steelers fan!!!" Kirkpatrick joked.
The performance came after Grande teased fans about a possible Coachella collab by sharing videos of herself jamming out to some *NSYNC tunes. In addition to the '90s boy band, Grande also brought out Dillon Francis, Nicki Minaj, Diddy and Mase during her headlining set.