40th American Music Awards Fashion

Justin Bieber.  (Jordan Strauss / Invision / Associated Press Photos)

Christina Aguilera.  (Jordan Strauss / Invision / Associated Press)

Kelly Rowland.  (Jordan Strauss / Invision / Associated Press Photos)

Nicki Minaj .  (Jason Merritt / Getty Images)

Lucy Hale.  (Jason Merritt / Getty Images)

Hayden Panettiere.  (Jordan Strauss / Invision / Associated Press Photos)

Chris Brown.  (Jason Merritt / Getty Images)

Brandy.  (Jason Merritt / Getty Images)

From left, Jordin Sparks and Jason Derulo.  (Jason Merritt / Getty Images)

Taylor Swift.  (Matt Sayles / Associated Press Photos)

Colbie Caillat.  (John Shearer / Invision Photography / Associated Press Photos)

From right, Luke Bryan and wife Caroline.  (Jason Merritt / Getty Images)

From left, Adrian Young,Gwen Stefani, Tony Kanal and Tom Dumont, of No Doubt.  (Jordan Strauss / Invision / Associated Press Photos)

Carly Rae Jepsen.  (Jordan Strauss / Invision / Associated Press Photos)

From left, Charles Kelley, Hillary Scott and Dave Haywood of Lady Antebellum.  (Jason Merritt / Getty Images)

From left, MC Hammer and Psy.  (Jason Merritt / Getty Images)

Jenny McCarthy.  (Jordan Strauss / Invision / Associated Press Photos)