Justin Bieber attended the 2012 Billboard Music Awards on May 20, 2012 in Las Vegas, Nevada.

He kept it casual and stylish wearing a Pierre Balmain denim jacket with black leather long sleeves and a black hood teamed with a white t-shirt and loose-fitting pants.

Silver jewelry, diamond stud earrings, and cool Giuseppe Zanotti studded high-top sneakers wrapped up his look.

Buy It:

Giuseppe Zanotti Studded Silver Mirror High Tops at SSENSE

Women's version by Pierre Balmain:

Pierre Balmain Denim Jacket (On Sale) at farfetch.com

Pierre Balmain Leather Sleeve Jacket in Grey at Forward

Nathan Sykes, Jay McGuiness, Siva Kaneswaran, Tom Parker, and Max George of The Wanted arrived at the 2012 Billboard Music Awards on May 20, 2012 in Las Vegas, Nevada.

The guys all suited up in handsome and tailored suits by Tommy Hilfiger.

Lisa Marie Presley arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She donned an ivory Temperley London floor-sweeping dress featuring striped seam detailing and ruffled tiers.

Lisa matched her dress with a black tuxedo blazer by Alexander McQueen and black platform sandals.

Large curls and complementing makeup shades concluded her look.

Buy It:

Similar blazer by McQ by Alexander McQueen:

McQ by Alexander McQueen Tuxedo Jacket at Neiman Marcus

Julie Bowen was among the actresses at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She picked out a black dress with a sheer, embellished panel down the center and a sheer neckline for an illusion effect from the Doo.Ri Pre-Fall 2012 collection.

Julie paired her dress, which also features a longer hem in the back, with sparkly diamond drop earrings and black suede platform pumps by Jimmy Choo.

Her look was complete with wavy curls and complementing makeup shades.

Buy It:

Doo.Ri Ombre Sequined Dress with Sheer Top at shopbop.com

Jimmy Choo Cosmic Suede Pumps at Net-A-Porter

Brandy arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She showed off her legs wearing a fringed and sleeveless mini dress with shiny gold metal accents and a plunging neckline from the Hervé Léger by Max Azria Spring 2012 collection.

Brandy accompanied her form-fitting dress with sparkly statement jewelry, a gold patterned clutch by Jimmy Choo, and gold Christian Louboutin Metal Nodo 150 watersnake pumps featuring a rose gold-tone metal bow with pavé crystal embellished studs and a peep toe.

A curly, voluminous hair style, blue and black eye makeup, and a glossy lip shade wrapped up her flirty look.

Buy It:

Herve Leger Fringe Dress with Metal Detail at shopbop.com

Herve Leger Fringe Bandage Dress at Neiman Marcus

Herve Leger Tassel Dress w/ Hardware in Bare at Forward

Same shoes in slingbacks:

Christian Louboutin Metal Nodo 150 Watersnake Slingbacks at Net-A-Porter

Christian Louboutin Metal Nodo 150 Ayers Slingbacks at Barneys New York

Christian Louboutin Studded-Bow Platform Slingbacks at Bergdorf Goodman

Monica arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She picked out a white long sleeve gown with a revealing keyhole, an embellishment detailing in the center of the waist, and a thigh-high side slit by Roberto Cavalli.

Her fitted gown was matched with sparkly diamond stud earrings, a metallic gold and multi-colored clutch by Roberto Cavalli, and animal Christian Louboutin "Daffodile" platform pumps.

A braided updo and a glossy light purple lip shade rounded out her great look.

Buy It:

Roberto Cavalli Ivory Slit Neck Gown at StyleBop

Roberto Cavalli Maxi Cutout Metallic Leather and Satin Clutch at Net-A-Porter

Same shoes in different variations:

Christian Louboutin Daffodil Leather Platform Pumps at Neiman Marcus

Christian Louboutin Daffodil Leather Platform Pumps at Bergdorf Goodman

Christian Louboutin Patent Leather Platform Pumps at Saks Fifth Avenue

Christian Louboutin Daffodil Glitter Platform Pumps at Bergdorf Goodman

Christian Louboutin Glitter Coated Platform Pumps at Saks Fifth Avenue

Christian Louboutin Daffodile 160 Crystal Embellished Suede Pumps at Net-A-Porter

Christian Louboutin Dafodile Strass Crystal Pumps at Neiman Marcus

Christian Louboutin Daffodile Python Platform Pumps at Neiman Marcus

Christian Louboutin Daffodile 160 Python Platform Pumps at Net-A-Porter

Christian Louboutin Daffodile 160 Suede Platform Pumps at Net-A-Porter

Christian Louboutin Daffodile Pumps at Barneys New York

Christian Louboutin Daffodile Pumps at Barneys New York

Christian Louboutin Daffodile 160 Suede Rose Platform Pumps at ShopSavannahs

Christian Louboutin Daffodile Suede Pumps at LUISAVIAROMA

Christian Louboutin Daffodile Suede Pumps at MATCHES

Christian Louboutin Daffodile Leopard Print Lame Pumps at Neiman Marcus

Christian Louboutin Daffodile 160mm Pony Skin Pumps at MATCHES

Natasha Bedingfield arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She wore a lovely mint turquoise embellished sheer illusion gown with a sheer tulle skirt and sheer long sleeves from the Amato Couture Spring 2012 collection.

Her gown was teamed with wavy curls and pretty makeup.

Later, she changed into a black long sleeve gown with a sheer embellished top, sheer long sleeves, and a side slit from the Christian Siriano Fall 2012 collection. Her gown was styled with a pretty white flower in her hair and nude pumps.

Chrissy Teigen joined John Legend at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She sported a red strapless satin dress with shiny leather accents and oversized peplums at the sides by Georges Chakra Couture.

Chrissy coordinated her futuristic dress with statement earrings by Le Vian, a shiny tube clutch, and metallic peep toe platform sandals with an ankle strap by Walter Steiger.

A simple ponytail with bangs in the front and pretty makeup rounded out her look.

Buy It:

Same shoes in different colors:

Walter Steiger Double Platform Sandals at Barneys New York

Walter Steiger Double Platform Sandals at Barneys New York

Taylor Swift arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She looked lovely wearing a red sleeveless chiffon gown with red floral lace detailing at the bodice for an illusion effect by Elie Saab.

Taylor accented her floaty gown with sparkly jewelry by Neil Lane and heels by Elie Saab.

Her look was completed with a straight hair style with bangs in the front, a black nail shade, brown and black eye makeup, and a glossy pink lip shade.

Buy It:

Similar gown in black:

Elie Saab Cap Sleeve Lace Bodice Gown at Neiman Marcus

Elie Saab Cap Sleeve Lace Bodice Gown at Bergdorf Goodman

Miley Cyrus arrived at the 2012 Billboard Music Awards, which was held on Sunday night (May 20) in Las Vegas, Nevada.

She took a fashion risk and wore an ivory double-breasted suit-style mini dress with semi sheer long sleeves and front flap pockets by Jean Paul Gaultier.

Miley teamed her dress with horn pendant necklace by Jacqui Aiche and super stylish striped platform sandals with an ankle strap from the Christian Louboutin 20th Anniversary collection.

A voluminous, retro hair style, dark eye makeup, and a pink lip shade concluded her menswear-inspired look.

Buy It:

Christian Louboutin 20th Anniversary Armadillo Bride 120 Leather Pumps at Net-A-Porter

Christian Louboutin Leather Platform Sandals at Saks Fifth Avenue

Same shoes in different colors:

Christian Louboutin Armadillo Bride Pumps at Barneys New York

Christian Louboutin Armadillo Bride Pumps at Barneys New York

Similar shoes:

Sam Edelman Odetta Striped Block Heeled Sandals at Asos

Sam Edelman Odetta Sandals at Nordstrom