Ariana Grande & Rachel Platten Play Billboard's Hot 100 Festival With Nathan Sykes

Ariana Grande can’t stop smiling on stage at the 2016 Billboard Hot 100 Festival held at Jones Beach Theater on Saturday (August 20) in Wantagh, New York.

The 23-year-old singer joined Rachel Platten and Nathan Sykes at the concert event.

Nathan was even seen chilling out at the festival at The Patch after his set.

PHOTOS: Check out the latest pics of Ariana Grande

“Jones Beach, you were absolutely unreal!!!!!” Ariana wrote on Instagram after the show. “I love you. thank you for your love and energy. EVERY DAMN WORD.”

45+ pictures inside of Ariana Grande, Rachel Platten and Nathan Sykes…