Billboard Music Awards 2012 — Best Red Carpet Looks

ABC-Carrie

THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) CARRIE UNDERWOOD

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) KATY PERRY

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) KATY PERRY

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) CHRIS BROWN

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) MILEY CYRUS

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) THE WANTED

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) CHRIS BROWN

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Ethan Miller/Getty Images via ABC) TAYLOR SWIFT

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) CARLY RAE JEPSEN

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JAY MCGUINESS

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) CARRIE UNDERWOOD

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) KATY PERRY

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) NATHAN SYKES

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) CHRIS BROWN

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) USHER

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) MIKE FISHER, CARRIE UNDERWOOD

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) JUSTIN BIEBER, USHER

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Chris Polk/Getty Images via ABC) JASON DERULO, JORDIN SPARKS

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) TAYLOR SWIFT

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) MILEY CYRUS, JULIANNE HOUGH

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THE 2012 BILLBOARD MUSIC AWARDS – BACKSTAGE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) REDFOO

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JUSTIN BIEBER

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) KATY PERRY

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THE 2012 BILLBOARD MUSIC AWARDS – THEATRE – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) KELLY CLARKSON

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THE 2012 BILLBOARD MUSIC AWARDS – ARRIVALS – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) KRIS KRISTOFFERSON, TAYLOR SWIFT

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LAS VEGAS, NV – MAY 20: Singer Justin Bieber arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

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THE 2012 BILLBOARD MUSIC AWARDS – ARRIVALS – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) JAY MCGUINESS OF THE WANTED

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THE 2012 BILLBOARD MUSIC AWARDS – ARRIVALS – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) NATHAN SYKES OF THE WANTED

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THE 2012 BILLBOARD MUSIC AWARDS – ARRIVALS – “The 2012 Billboard Music Awards” broadcast live from the MGM Grand Garden Arena in Las Vegas, SUNDAY, MAY 20 (8:00-11:00 p.m., ET), on ABC. (Photo by Kevin Mazur/WireImage via ABC) MILEY CYRUS, BRANDY

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LAS VEGAS, NV – MAY 20: Singers Justin Bieber (L) and Usher attend the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Pat Houston (L) and Bobbi Kristina Houston-Brown accept the Millennium Award on behalf of Whitney Houston onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Ethan Miller/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Jordin Sparks performs onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Ethan Miller/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Katy Perry performs onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: The Wanted perform onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Justin Bieber accepts the award for Top Social Artist onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Ethan Miller/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: singer Katy Perry & her Grandma arrive at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)

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LAS VEGAS, NV – MAY 20: Singer Carly Rae Jepsen performs onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Justin Bieber performs onstage at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Ethan Miller/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Usher poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Getty Images)

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LAS VEGAS, NV – MAY 20: Presenter Robin Thicke poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)

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LAS VEGAS, NV – MAY 20: Rapper Wiz Khalifa winner of the award for Top New Artist poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)

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LAS VEGAS, NV – MAY 20: Singer Justin Bieber at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/Billboards2012/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Carly Rae Jepsen arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)

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LAS VEGAS, NV – MAY 20: Actress Zooey Deschanel arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)

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LAS VEGAS, NV – MAY 20: Chrissy Teigen arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)

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Kelly Clarkson performs at the 2012 Billboard Music Awards (Getty)

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Chris Brown performs at the 2012 Billboard Music Awards (Getty)

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LAS VEGAS, NV – MAY 20: Taylor Swift arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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LAS VEGAS, NV – MAY 20: Katy Perry arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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LAS VEGAS, NV – MAY 20: Jordin Sparks arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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LAS VEGAS, NV – MAY 20: Natasha Bedingfield arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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LAS VEGAS, NV – MAY 20: Alicia Keys arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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LAS VEGAS, NV – MAY 20: Julianne Hough arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (WireImage)

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From Justin Bieber to Miley Cyrus, all of the biggest stars are out in Las Vegas. Click to see the best looks from the carpet! The 2012 Billboard Music Awards brought plenty of stars to the May 20 carpet at the MGA Grand in Las Vegas — and we loved their style! From Justin Bieber to Miley Cyrus, everyone looked great. Check out our gallery for the best red carpet pics and tell us, HollywoodLifers — who had the best style? (Getty [2])

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LAS VEGAS, NV – MAY 20: Singer Justin Bieber arrives at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)

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LAS VEGAS, NV – MAY 20: (L-R) Nathan Sykes, Jay McGuiness, Siva Kaneswaran, Tom Parker and Max George of The Wanted arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Carrie Underwood arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)

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LAS VEGAS, NV – MAY 20: Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ABC)