2. Kelly Clarkson 2005
Kelly Clarkson turned up the heat at the 2005 ceremony in a champagne satin gown with an open back. Now this is how you go sexy while still staying classy.

The front of the dress featured an asymmetrical neckline with a single strap going over one shoulder and around the nape of her neck. And as you can see, the back part dipped dangerously low and flaunted an eye-popping amount of skin. The singer paired the look with a pompadour and gold dangle earrings.