Miley Cyrus MuchMusic Video Awards black mesh bra hotpants white leotard

Miley Cyrus performed in two revealing outfits at the MuchMusic Video Awards. Photos: George Pimentel, WireImage

June 20, 2010, is a date that will go down in Justin Bieber history. For it was on this evening that a scantily clad Miley Cyrus gyrated in front of the 16-year-old boy at Canada's MuchMusic Video Awards and he instantly became a man.

Well, not really, but Cyrus, 17, definitely turned heads -- and probably caused whiplash -- with her latest barely there number.

Apparently channeling her inner chola, the former "Hanna Montana" star took to the stage in a do-rag, door knocker earrings, a sexy mesh cut-out leotard, leather short-shorts, knee-high socks, and high heels to perform her hit "Party in the USA," the Daily Mail reports.

During the song, the heavily made up Disney darling switched the lyrics from "a Jay-Z song was on" to a "a JB song" as Bieber joined her onstage and she did her best stripper moves for him. Like her outfit, she left little to the imagination.

Teen queen Cyrus was a bit more covered up when she returned to sing her latest release, "Can't Be Tamed." This time, she looked almost virginal -- as in Madonna's "Like a Virgin" -- in a white retro-bra-and-brief-style leotard (with strappy arm wraps) that threatened to reveal more than she intended as she danced.

Though she didn't flash the crowd, Cyrus still caused a stir: The New York Daily News called her tribal-themed performance -- which featured backup dancers in grass skirts, spears topped with shrunken heads, and Cyrus screeching and squealing -- "borderline racist."

Regardless of Cyrus's recent adult antics -- from groping herself in a corset to faking same-sex kisses -- the singer-actress isn't losing any fans: Her "Party in the USA" nabbed the International Video of the Year award, which she dedicated to her daddy, Billy Ray Cyrus. Aww!

Meanwhile, Bieber is making headlines of his own for being seen out with a much older woman.

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