Miley Cyrus shows off

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BESTPIX iHeartRadio Music Festival – Day 2 – Backstage

LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus attends the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo by… Jason Kempin/Getty Images for Clear Channel

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iHeartRadio Music Festival – Day 2 – Show

LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Denise Truscello/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Kevin Mazur/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Kevin Mazur/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Mark Davis/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Mark Davis/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Mark Davis/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Mark Davis/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Christopher Polk/Getty Images for Clear Channel

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iHeartRadio Music Festival – Show – Day 2

LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic

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Miley Cyrus performs during the iHeartRadio Music Festival in Las Vegas, Nevada September 21, 2013. REUTERS/Steve Marcus (UNITED STATES – Tags: ENTERTAINMENT) REUTERS/Steve Marcus

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Denise Truscello/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Denise Truscello/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic

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LAS VEGAS, NV – SEPTEMBER 21: Entertainer Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada…. Denise Truscello/Getty Images for Clear Channel

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic

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LAS VEGAS, NV – SEPTEMBER 21: Miley Cyrus performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo… Jeff Kravitz/FilmMagic