25/31
Paul Herbert for iHeartRadio
Blake Horstmann
The Bachelorette star enjoys the music of Shawn Mendes, Calvin Harris and more at KIISFM's show in Los Angeles.
26/31
Kevin Winter/Getty Images for iHeartMedia
Dua Lipa
The singer performs in a sparkling dress.
27/31
Kevin Winter/Getty Images for iHeartMedia
Alessia Cara
The singer performs in a suit.
28/31
Rich Fury/Getty Images for iHeartMedia
Bebe Rexha
The singer channels a sexy snow queen onstage.
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Emma McIntyre/Getty Images for iHeartMedia
Shawn Mendes
The singer showcases his signature smile onstage.
30/31
Jon Kopaloff/Getty Images
Camila Cabello
The singer arrives looking like a princess.
31/31
Jon Kopaloff/Getty Images
Jillian Michaels
The fitness star showcases a casual look.