Demi Lovato & Nick Jonas Rock iHeartRadio Festival in Vegas!

Demi Lovato is all about the mesh as she performs at The Daytime Village during the 2015 iHeartRadio Music Festival at the Las Vegas Village on Saturday (September 19) in Las Vegas.

The 23-year-old “Cool for the Summer” singer was joined by Nick Jonas, Joe Jonas (who performed with his new band DNCE), and Demi‘s boyfriend Wilmer Valderrama.

Meanwhile, Taylor Lautner, Nat Wolff, Kat Graham, and Ashley Benson all hit the stage to present different performers that day.

FYI: Ashley is wearing Kurt Geiger London shoes and Jennifer Meyer jewelry. Her hair was styled using Matrix StyleLink products. Wilmer is wearing AllSaints.

45+ pictures inside of Demi Lovato, Nick Jonas, and more performing in Vegas…