The 2011 Billboard Awards took place Sunday last at the MGM Grand Arena in Las Vegas. The event saw some pretty awesome appearances on stage as well as on the red carpet. The stars came out in their numbers dressed to impress. However, Nicki Minaj, Fergie and Ke$ha definitely stood out with their racy outfits.

Fergie

Black Eyed Peas leading lady Fergie arrived in a Hervé Léger by Max Azria bondage dress and Christian Louboutin heels at the Billboard Awards in Las Vegas.

Nicki

Rapper Nicki Minaj showed off her curves to full effect in a Mark Fast bodysuit and Versacé heels.

Ke$ha

Pop star Ke$ha wore a silver Jad Ghanour cut-out dress, before changing into a metallic and feathered bodysuit for her stage performance.

Rihanna

Rihanna was unusually conservative in a white Max Azria suit and tan Christian Louboutin stilettos.

Beyonce

Beyoncé , whose simple black Lanvin dress on the red carpet was eclipsed by her risqué stage outfit, added the title of Billboard Millennium Artist at the awards.

Taylor

Country singer Taylor Swift stunned in a gold Elie Saab gown.