The Chainsmokers surprised students at a school in Chicago by gatecrashing their prom.

The US duo decided to drop by the dance after seeing it was taking place near their latest tour stop.

They posted a photograph on Twitter of themselves on stage with pupils from Huntley High School.

According to US reports, the pair – Andrew Taggart and Alex Pall – gave a 10-minute performance at the event.

They later teased that they might appear at another school dance.

The Chainsmokers are known for tracks including Closer, Roses and #Selfie.