Chappell Roan and Olivia Rodrigo perform "HOT TO GO!" in Los Angeles

Taking to the stage during the GUTS world tour stop in Inglewood, California, Rodrigo introduced Roan as the “very special surprise guest" Roan, and called her one of the most “inspiring, powerful artists I’ve ever had the pleasure of meeting.” Announcing the song, Roan said: “We’re going to sing you a song and teach you a dance,” before the crowd erupted into applause.

"HOT TO GO!" features on Chappell Roan's debut album, The Rise and Fall of a Midwest Princess, and has been a standout moment in all of her live sets, in which she gets the crowd to spell out the song title with their arms.

Y’all… Chappell Roan just showed up to perform with Olivia Rodrigo and this crowd has collectively lost its mind. pic.twitter.com/5QCBWBxnRH

The performance is a full circle moment for Chappell Roan who opened up the first few dates on the tour, and had contributed backing vocals to Olivia Rodrigo's second album, GUTS.