Miley Cyrus stepped on the Billboard Music Awards stage with a brand new look and a brand new attitude.

Or perhaps, she was just back to her old self.

Whatever it was, the audience gathered in Las Vegas ate it up, as she performed her new single “Malibu.”

“She’s not just my sister, but the singer I love to listen to the most,” Cyrus' sister, Noah, said while introducing her.

"What the hell – I thought I was?" their father, Billy Ray Cyrus, replied. "Miley is always speaking the truth and being herself, and we are just so proud of her."

“And she’s the happiest she has ever been,” Noah Cyrus added. “You can hear it in her new single, and she’s bring Malibu to Las Vegas – and for the first time in years with pants on!”

And with that, Miley sang her new single with a country swagger – and ended the song no longer being able to hold back the emotion of the moment.

“Thank you, everyone,” she said through tears as the crowd erupted in applause. “Thank you.”

LAS VEGAS, NV - MAY 21:  Singer Miley Cyrus performs onstage during the 2017 Billboard Music Awards at T-Mobile Arena on May 21, 2017 in Las Vegas, Nevada.  (Photo by Ethan Miller/Getty Images)

Credit: Ethan Miller

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Credit: Ethan Miller