Were you there? See all the pics here!
Watch on Yahoo Live Friday & Saturday nights or listen live on an iHeartRadio station near you!
Get ready for Ariana's performance in Vegas with videos from her iHeartRadio Theater Los Angeles show!
Get all of the details here.
Join us before every OSU home game! Get all the info here!
See meet and greet photos here.
Nick Jonas Releases "Jealous" Music Video!
WATCH: 5 Seconds Of Summer Performs In-Studio at KIIS
LISTEN: Heffron Drive 'Parallel'
WATCH: Ellen DeGeneres & Kristen Wiig Sing 'Let It Go' Even Though They Don't Know The Words
WATCH: Ed Sheeran's 'Baby One More Time' Freestyle
Robin Thicke Opens Up!