The "Side to Side" songstress performed some of her biggest hits at the Las Vegas concert.
Sia's favorite dancer once again stole the show.
"Toothbrush" singers pose on the red carpet.
Fresh off their exciting Las Vegas residency announcement, the men of BSB stole the show with an awesome performance.
Hello, Rafael! The Jane the Virgin star looked as handsome as ever.
The "White Wedding" crooner was seen before taking the stage with Miley Cyrus.
The "Greenlight" artist brought the crowd to its feet.
Donning her signature wig, Sia concealed her face from the audience.
The iHeartRadio Music Festival's venue was filled to capacity.