Photo Gallery: 2014 iHeartRadio Music Festival in Las Vegas

Taylor Swift performs at iHeartRadio Music Festival

Nicki Minaj

Ariana Grande and Nicki Minaj perform onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Ariana Grande performs during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Nicki Minaj performs during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Rapper Iggy Azalea performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Singer Hayley Williams of Paramore performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Harry Styles of music group One Direction performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Rivers Cuomo of the music group Weezer performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Ed Sheeran performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Meghan Trainor performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Lil Jon performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Pat Monahan of the music group Train performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Rappers Tony Yayo, 50 Cent, Young Buck and Lloyd Banks of G Unit perform onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Eric Church performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Singer Lorde performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Vince Neil performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Tyler Glenn of Neon Trees performs onstage during the 2014 iHeartRadio Music Festival Village

Actress/singer Taylor Momsen of The Pretty Reckless performs onstage during the 2014 iHeartRadio Music Festival Village

Musician Ashton Irwin of 5 Seconds of Summer performs onstage during the 2014 iHeartRadio Music Festival Village

Musician Nicolas Sereba of Nico & Vinz performs onstage during the 2014 iHeartRadio Music Festival Village

Singer Kacey Musgraves performs onstage during the 2014 iHeartRadio Music Festival Village

Musician Riley McDonough of Before You Exit performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Recording artist Alicia Keys performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Dan Smith of Bastille performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Pete Wentz of Fall Out Boy performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Chris Martin of Coldplay performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Dan Smith of Bastille performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena

Musician Nikki Sixx of Motley Crue performs onstage during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena