Ariana Grande Lights Up The iHeartRadio Music Festival with Zedd & Hailee Steinfeld

Ariana Grande lights up the stage at the iHeartRadio Music Festival on Saturday (September 24) in Las Vegas.

The 23-year-old “Into You” singer set off fireworks on stage for her set, while Zedd hopped in and played the drums with her band.

PHOTOS: Check out the latest pics of Ariana Grande

Later on, Zedd performed his own show, truly lighting up the arena after Hailee Steinfeld took the stage for her second set of the day. Earlier, she played the Daytime Village.

40+ pics inside of Ariana Grande, Hailee Steinfeld and Zedd…