Jennifer Lopez and Casper Smart
Jennifer Lopez had boyfriend Casper Smart on her arm on the red carpet before she took to the stage with Pitbull to premiere their World Cup anthem song.
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Image Credit: Photo Credit: John Shearer/Invision/AP) -
Carrie Underwood
Image Credit: Photo Credit: John Shearer/Invision/AP) Performer and country star Carrie Underwood wore a very eye-catching neon yellow gown for the Billboard Music Awards on Sunday.
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Kesha
Image Credit: Photo Credit: John Shearer/Invision/AP Kesha wore a sweeping lace and tulle black gown by Dionea Orcini as she arrived at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on Sunday.
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Imagine Dragons
Image Credit: Photo Credit: John Shearer/Invision/AP Imagine Dragons were among the big winners of the night as Ben McKee, Dan Reynolds, Wayne Sermon and Daniel Platzman, arrived together.
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Lucy Hale
Image Credit: Photo Credit: John Shearer/Invision/AP Pretty Little Liars star Lucy Hale was among the music fans in attendance at the show.
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Jordin Sparks
Image Credit: Photo Credit: John Shearer/Invision/AP American Idol alum Jordin Sparks wore a sparkly little black dress with a halter neck.
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Nicki Minaj
Image Credit: Photo Credit: Frazer Harrison/Getty Images via ABC Presenter Nicki Minaj was a sophisticated sight in long black gown with daring cut-outs.
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Phillip Phillips
Image Credit: Photo Credit: John Shearer/Invision/AP American Idol season 11 winner Phillip Phillips arrived with Hannah Blackwell for the star-filled event in Las Vegas.
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Ludacris
Image Credit: Photo Credit: John Shearer/Invision/AP Host Ludacris was dashing as he arrived at the Billboard Music Awards at the MGM Grand Garden Arena in Las Vegas wearing a bright pink tie and checked shirt.
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Josh Groban
Image Credit: Photo Credit: John Shearer/Invision/AP Having been tapped as one of the judges of ABC's Rising Star competition, singer Josh Groban will be a familiar face on television this summer.
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Iggy Azalea
Image Credit: Photo Credit: John Shearer/Invision/AP Wearing a long burgundy gown on the red carpet, Iggy Azalea later changed into a cheerleader outfit to perform her top 5 song "Fancy."
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5 Seconds of Summer
Image Credit: Photo Credit: John Shearer/Invision/AP The members of 5 Seconds of Summer — Luke Hemmings, Ashton Irwin, Calum Hood and Michael Clifford — celebrated the 2014 Billboard Music Awards kicking off in Las Vegas.
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Cameron Dallas
Image Credit: Photo Credit: John Shearer/Invision/AP Vine star Cameron Dallas was already comfortable in the spotlight as he arrived at the 2014 Billboard Music Awards in Las Vegas.
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OneRepublic
Image Credit: Photo Credit: John Shearer/Invision/AP) Colorado pop rock band, OneRepublic hit Las Vegas as Ryan Tedder, Zach Filkins, Eddie Fisher, Drew Brown and Brent Kutzle took to the red carpet.
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John Legend
Image Credit: Photo Credit: John Shearer/Invision/AP John Legend looked dapper on the red carpet before his moving stage performance during the show.
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Shania Twain
Image Credit: Photo Credit: John Shearer/Invision/AP Country star Shania Twain was dramatic in a floor-length black gown despite the desert heat.
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Cher Lloyd
Image Credit: Photo Credit: John Shearer/Invision/AP British singer and X Factor alum Cher Lloyd covered her pale English rose skin in a bright purple lace-detailed dress.
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Estelle
Image Credit: Photo Credit: John Shearer/Invision/AP British singer Estelle brought juicy orange and warm blue to the red carpet.
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Jack Antonoff
Image Credit: Photo Credit: John Shearer/Invision/AP Singer Jack Antonoff was at the awards, with his debut album coming out this summer.
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Florida Georgia Line
Image Credit: Photo Credit: John Shearer/Invision/AP Southern rockers Florida Georgia Line — a.k.a. Brian Kelley and Tyler Hubbard — were among the performers at the Billboard Music Awards.
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Sarah Hyland
Image Credit: Photo Credit: John Shearer/Invision/AP Modern Family star Sarah Hyland ( in Dionea Orcini) was a presenter at the awards, which also aired on ABC.
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Austin Mahone
Image Credit: Photo Credit: John Shearer/Invision/AP Teen heartthrob Austin Mahone paired a white jacket and trainers with his black trousers and shirt combo.
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Chrissy Teigen
Image Credit: Photo Credit: John Shearer/Invision/AP Model Chrissy Teigen made a statement in a bold black and white Fyodor Golan dress.
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Miranda Lambert
Image Credit: Photo Credit: John Shearer/Invision/AP Country star Miranda Lambert was pretty in pink before she shared the stage with Carrie Underwood.
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Pete Wentz
Image Credit: Photo Credit: John Shearer/Invision/AP Fall Out Boy rocker Pete Wentz wore a stylish steel grey jacket for the prestigious awards.
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Ricky Martin
Image Credit: Photo Credit: John Shearer/Invision/AP Ricky Martin showed his support for the social media campaign to find the 200 kidnapped Nigerian girls.
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Luke Bryan and Caroline Boyer
Image Credit: Photo Credit: John Shearer/Invision/AP Country singer Luke Bryan had his college sweetheart wife, Caroline Boyer, on his arm.
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Kendall Jenner
Image Credit: Photo Credit: John Shearer/Invision/AP Teenage model and reality star Kendall Jenner showed her rock style in leather pants and towering heels before fluffing her lines while introducing 5 Seconds to Summer.
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Shakira
Image Credit: Photo Credit: John Shearer/Invision/AP Shakira slinked down the red carpet in a shimmering steel blue dress by Dionea Orcini .
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Kylie Jenner
Image Credit: Photo Credit: John Shearer/Invision/AP Kim Kardashian's little sister Kylie Jenner added color to her white outfit with green-tipped hair rather than bright accessories.
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Calvin Harris
Image Credit: Photo Credit: Frazer Harrison/Getty Images via ABC Hip British DJ Calvin Harris took time out from his residency at Las Vegas super club Hakkasan to attend the awards.
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Jason Derulo
Image Credit: Photo Credit: Frazer Harrison/Getty Images via ABC Jason Derulo was a big hit during the show with his performance of "Talk Dirty."
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2 Chainz
Image Credit: Photo Credit: Frazer Harrison/Getty Images via ABC Rapper 2 Chainz wore all white even before Memorial Day to ward off the Las Vegas heat.
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Kelly Rowland
Image Credit: Photo Credit: ABC Destiny's Child star Kelly Rowland flaunted cleavage and thigh in a daring fashion statement.
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Lance Bass
Image Credit: Photo Credit: John Shearer/Invision/AP 'N Sync's Lance Bass wore a bright pink and blue tie to off-set his grey shirt on the red carpet.
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Andi Dorfman
Image Credit: Photo Credit: John Shearer/Invision/AP The latest Bachelorette Andi Dorfman attended the awards show that aired on the same channel as the reality dating show, ABC.
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Renee Bargh
Image Credit: Photo Credit: John Shearer/Invision/AP Australian TV personality Renee Bargh got a taste of Sin City at the awards at Las Vegas' MGM Grand Garden Arena.
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Roshon Fegan
Image Credit: Photo Credit: Frazer Harrison/Getty Images via ABC "We Rock" singer Roshon Fegan wisely wore shorts for the scorching hot red carpet.
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Wiz Khalifa and Amber Rose
Image Credit: Photo Credit: John Shearer/Invision/AP Newlywed's Wiz Khalifa and Amber Rose — boasted the biggest sunglasses of the night — made a bold pair.
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Keltie Colleen
Image Credit: Photo Credit: John Shearer/Invision/AP As a former Radio City Rockette and a dancer for Beyonce and Kanye West, Keltie Colleen is a music industry veteran.
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Lauren Elizabeth
Image Credit: Photo Credit: John Shearer/Invision/AP Lauren Elizabeth embraced the onset of summer in a short white ensemble with a flash of tanned stomach.
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Rocsi
Image Credit: Photo Credit: John Shearer/Invision/AP BET co-host Rocsi used cutouts in her streamlined black dress to stay cool in the Las Vegas heat.