The 2012 Billboard Music Awards brought the biggest music stars of today to Sin City for a night of exciting performances and tributes. Carly Rae Jepsen, Carrie Underwood, Miley Cyrus, Justin Bieber, LMFAO, Brandy, Katy Perry, Taylor Swift and more hit the red carpet (though its color was white) before the big event to flaunt their best. 

Carrie Underwood was the main show-stopper of the night in a heather-gray and rose tulle Oscar de la Renta gown from the designer's Fall 2012 collection. Underwood truly captured a Cinderella moment, with her blonde hair cascading in curls and her frothy gown exuding ephemeral beauty. She accessorized with an Oscar de la Renta Cara clutch made of pearl and crystal sapphire along with silver metallic open-toe heels. Underwood was joined by hunky hubby Mike Fisher. 

Carly Rae Jepsen, newcomer to the music scene but at No. 1 on the iTunes music charts for her smash-hit single Call Me Maybe, was another best-dressed star of the night. Jepsen wore a nude-hued gown with delicate folds and flutter cap-sleeves for her Billboard Music Awards debut. Her hair was styled pin-straight with her signature bangs in perfect place. Jepsen also hit the mark with her dark, burgundy lips -- a major trend at the 2012 Met Gala. 

Although she looked stunning on the red carpet on her way into the show, Carly Rae Jepsen received some flak for her on-stage and post-show attire. For her performance, the 26-year-old wore a sparkling mint green shell top with sparking white and silver pants and sneakers. Many criticized the singer for dressing far too young for her age. Some thought that the look was contrived, since Jepsen's fan base is mainly young teenagers. 

It definitely seemed like a concerted effort to keep Carly's image squeaky clean and young. Did it work? Or was it a wasted opportunity to introduce Carly to a huge new audience that's never watched Justin Beiber [sic] lip-synch her song? asked Crushable.  

Taylor Swift looked sexy in red Elie Saab. She accessorized with Elie Saab shoes and Neil Lane jewels. Maybe it is the bangs or maybe it is those jaded songs about ex-boyfriends, both something about the 22-year-old star has surely helped her come into her own. 

Miley Cyrus' look might have been hit-or-miss; but we chose hit. The 19-year-old took a risk with an ivory Jean Paul Gaultier double-breasted jacket turned mini dress. The 19-year-old complemented her outfit with smoky eyes, nude lips, Jacquie Aiche jewels and black-and-white striped Christian Louboutin ankle-strap peep-toe heels. One misstep Cyrus made was her hair. The bouffant styling and brassy color do not work on the young singer.

Check out the best dressed from the 2012 Billboard Music Awards. Who do you think looked the best?