The Chainsmokers surprised students from Huntley High School (just outsider of Chicago) by showing up to their prom at a Hyatt Regency hotel!
While it was a surprise to students, their appearance had been in the works for about two weeks. Principal Scott Rowe says he got a call from someone who works with The Chainsmokers to discuss the appearance. He notes, "It was probably the toughest secret I've ever kept, because I knew the kids were going to go crazy for it."
And it looks as though The Chainsmokers stint as prom DJs may just be beginning.
They tweeted, "Your prom could be next.”