The fashion buzzword for Rachel McAdams [1] at Sunday evening's Oscars in Los Angeles was elegance. After stunning at the show in a forest-green August Getty Atelier [2] gown, Rachel changed into her second gorgeous look of the night to attend Vanity Fair's afterparty [3] at the Wallis Annenberg Center For the Performing Arts.

Working with stylists Mariel Haenn and Rob Zangardi, Rachel selected a beautiful, sequined gown from New York designer Naeem Khan for the bash. She finished her outfit with NIWAKA Fine Jewelry and a pair of sky-high silver stilettos.

Perhaps the best part of Rachel's Academy Awards look was the fact that her beauty look was done by none other than her sister, makeup artist Kayleen McAdams. Kayleen walked us through Rachel's Oscars makeup [4], detailing how the two created a "sexy" and "sultry" effect.