For the 2012 annual Primetime Emmy Awards, Heidi chose a sea-foam green chiffon gown, accented with 30's style draping on the shoulders and waistband.

"We are always excited to work with a new and talented designer," says her stylist Maryam Malakpour. "We recently started working with Alexandre Vauthier and when he showed us his collection, Heidi immediately fell in love with the color and the translucent, airy feel of the dress."

And, like many red carpet ensembles, it didn't come without a challenge during the fitting process. "It was completely sheer, so we had the designer add lining, but then the lining made the dress feel too bulky and it lost its cool and airy feel, so we had to think and made it work!"

For her hair, stylist Oribe Canales created a style reminiscent of Hollywood glamour to compliment her gown. "The inspiration for the style is a combination of the 70s and 90s," he says of the look that Heidi chose herself. "Decedent but sweet, soft but severe."

See more of Heidi's past red carpet looks here.