Miley Cyrus Gets Emotional

The pop star ran off stage crying in the middle of singing her hit "Wrecking Ball."
2:34 | 09/22/13

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Transcript for Miley Cyrus Gets Emotional
another miami yi cyrus performance in the news. The issue is more emotional. At the iheart radio concert in las vegas last night, she broke down while belting her breakup anthem. Apparently hitting too close to home after her real-life breakup made headlines and abc's adeet yeah roy has more. Good morning. What happens in vegas definitely doesn't stay in vegas when it comes to miley cyrus. Fresh off the breakup the singer opened up on stage about her troubles. ♪ Reporter: After a rough few weeks, miley cyrus poured her heart at the music festival in las vegas saturday, the singer choking up while singing her song. Her face mascara-stained from her tears. After the song she walked off stage, hugged her mom and wiped her tears away. In an interview before she came on stage, she talked about making personal sacrifices for her career. Not really stopping for anything. Reporter: Having dealt with heart break, her performance at the music awards last month, her performance amounted to a public flogging. She's taking heat for her racy video for "wrecking ball." In which she appeared nude. She addressd that criticism on stage. As you know always, there are things that I'm doing things that are getting me in trouble. It's just me, my heart and soul telling me what to do. Reporter: No more tears, just high-octane energy and a skimpy outfit, the pop superstar resilient and defiant. And miley was introduced by britney spears. The pair was photographed hugging backstage. It's nice to hear that she has support from britney and lady gaga. Coming up on "good morning america" -- pie rates enough to set a record?

This transcript has been automatically generated and may not be 100% accurate.

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