Justin Timberlake was noticeably absent from the reunion, as he's wrapping up his Man of the Woods Tour.
Adding more fuel to the speculation, Bass was also spotted in Indio, Calif., where the music festival is held, with husband Michael Turchin. On Thursday night, the duo was spotted at the GBK Coachella Lounge checking out Old Gringo boots. Bass also got a personal gift for Grande made from Kate Mesta jewelry that featured lyrics of a song.
As of early Sunday morning, nothing had been officially confirmed by Grande, though she did drop a hint when she posted a video of herself singing along to the band's song "Tearin' Up My Heart" on April 11.
"the best medicine," she captioned the post with a heart. "90s baby."
Then, hours before Grande was set to hit the stage on Sunday, Chasez tweeted, "Mic check, mic check one... two... is this thing on?!?"
"...... sure is," Grande replied, seemingly confirming a collab.
Bass also replied to the tweet, "Here we go ooo ooo ooo."