Carly Rae Jepsen @ 2012 Billboard Awards, May 20

Carly Rae Jepsen two-styles @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada. 

Zooey Deschanel @ 2012 Billboard Awards, May 20

Zooey Deschanel @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada. 

She wore: Moschino

Julianne Hough @ 2012 Billboard Awards, May 20

Julianne Hough @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada. 

She wore: Kaufman Franco

Taylor Swift @ 2012 Billboard Music Awards, May 20

Taylor Swift @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada. 

Who later won the 'Women of the Year' Award. 

She wore: Elie Saab

Katy Perry @ 2012 Billboard Music Awards, May 20

Katy Perry @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada

She wore: Blumarine

Chrissy Teigen @ 2012 Billboard Music Awards, May 20

Chrissy Teigen @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada

Brandy @ 2012 Billboard Music Awards, May 20

Brandy @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada

She wore: Herve Leger

Carrie Underwood @ 2012 Billboard Music Awards, May 20

Carrie Underwood @ the 2012 Billboard Music Awards held at the MGM Grand Garden Arena in Las Vegas, Nevada

She wore: Oscar de la Renta

Miley Cyrus @ 2012 Billboard Music Awards, May 20

Miley Cyrus @ 2012 Billboard Music Awards in Las Vegas

She wore: dress- JeanPaul Gaultier

heels- Christian Louboutin