iHeart Radio Music Festival 2014

Iggy Azalea performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Eric Church performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Eric Church performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Lorde performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Train performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Train performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

50 Cent performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

50 Cent performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Megan Trainor performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Iggy Azalea performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Paramore performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV. Paramore performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Paramore performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV. Paramore performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Lil Jon performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Calvin Harris performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Taylor Swift performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Coldplay performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Coldplay performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Steve Aoki performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Jason Derulo performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Mötley Crüe perform at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Mötley Crüe perform at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Mötley Crüe perform at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Mötley Crüe perform at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Mötley Crüe perform at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Zac Brown Band performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Usher performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Usher performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Usher performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Taylor Swift performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Bastille performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Alicia Keys performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Steve Aoki performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Steve Aoki performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Zac Brown Band performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Ariana Grande performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Usher performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Taylor Swift performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

One Direction performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Weezer performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Eric Church performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Lorde performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Lorde performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.

Train performs at the 2014 iHeartRadio Music Festival from the MGM Grand Garden Arena, Las Vegas, NV.