Betty Who Goes Sheer at iHeartRadio Music Awards 2019!

Betty Who Goes Sheer at iHeartRadio Music Awards 2019!

Betty Who rocked a sheer look at the 2019 iHeartRadio Music Awards!

The 27-year-old musician hit the red carpet at the award ceremony on Thursday evening (March 14) at the Microsoft Theater in Los Angeles.

PHOTOS: Check out the latest pics of Betty Who

During the show, Betty had freaked out when the Backstreet Boys took the stage.

“Guys I am DYING! I wanna learn all these moves right fkn now,” Betty wrote on her Instagram story.

The iHeartRadio Music Awards airs tonight at 8pm ET on Fox.

FYI: Betty is wearing a Zigman bodysuit, Jimmy Choo heels, House of Emmanuele earrings, H Crown rings and more jewelry from The Residency.