The 2012 Billboard Music Awards are shaping up to be a one-of-a-kind event: Justin Bieber, Carrie Underwood, LMFAO and The Wanted are the first performers announced for the May 20 show, which will air from the MGM Grand Garden Arena in Las Vegas for the second year in a row on ABC.

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Underwood's performance will come on the heels of her fourth full-length release, "Blown Away," which includes the new Top 10 single "Good Girl." The country superstar's latest album follows three best-selling efforts -- 2005's "Some Hearts," 2007's "Carnival Ride" and 2009's "Play On" -- that spawned smash singles like "Jesus, Take The Wheel," "Before He Cheats" and "Cowboy Casanova," and have sold a combined 12 million copies, according to Nielsen SoundScan.

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Meanwhile, Justin Bieber is also set to return with a hotly anticipated new album, "Believe" (due June 19), that has already been previewed by the irresistible lead single, "Boyfriend." The teen phenom topped the Billboard 200 chart twice last year, with his "Never Say Never: The Remixes" album and "Under The Mistletoe" holiday effort, after scoring his first No. 1 album with "My World 2.0" in 2010.

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Party masters LMFAO have shuffled to the top of the Hot 100 twice in the past year, with "Party Rock Anthem" and "Sexy And I Know It" -- as well as a performance alongside Madonna at the Bridgestone Super Bowl Halftime Show in February -- turning the electro-pop duo into trend-setting stars. And U.K. pop vocal group The Wanted have exploded to success in the U.S., as their hypnotizing single "Glad You Came" hitting the Top 5 of the Hot 100 and performances on "American Idol" and the "Today" show preceding their self-titled debut U.S. EP, out April 24.

More announcements are on the way, with additional acts and presenters to be revealed in the coming weeks. Last year, the Billboard Music Awards returned in grand fashion at the MGM Grand Garden Arena, with show-stopping performances by Beyonce, Pitbull, Nicki Minaj, Lady Antebellum, the Black Eyed Peas, Rihanna and Britney Spears, among others.

Buy Tickets To The 2012 Billboard Music Awards

Tickets for the 2012 Billboard Music Awards are now on sale at Ticketmaster.com and MGMGrand.com. The 2012 Billboard Music Awards will be co-executive produced by Richard D. Beckman, CEO of Prometheus Global Media and Don Mischer Productions.

Questions? Comments? Let us know: @billboardbiz

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