1/23
Kevork Djansezian/NBC/NBCU Photo Bank
Oh So Chic
In Stella McCartney.
2/23
Mike Coppola/Getty Images for SiriusXM
Pretty Woman
In a black polka dot romper.
3/23
Gotham/GC Images
Bold & Bright
In Valentino.
4/23
VALERIE MACON/AFP/Getty Images
Powerful Pink
in Brandon Maxwell.
5/23
Michael Hurcomb/Shutterstock
Back At It
In Dsquared2.
6/23
Anthony Harvey/Shutterstock
A Star in Stripes
In Givenchy.
7/23
Joel Ryan/AP/REX/Shutterstock
Cannes Couture
In Armani Privé.
8/23
Donato Sardella/Getty Images for Hammer Museum
Prim & Proper
In Bottega Veneta.
9/23
Stéphane Feugère for Lancôme
Power Suit
In Givenchy.
10/23
Jordan Strauss/Invision/AP
Jumpsuit Envy
In Givenchy.
11/23
Jason Merritt/Getty Images
A Leg Up!
In Elie Saab Couture.
12/23
Jordan Strauss/Invision/AP
Oscar Darling
In Givenchy Couture.
13/23
Matt Sayles/Invision/AP
Think Pink
In Valentino.
14/23
Dimitrios Kambouris/Getty Images
Perfect in Purple
In Proenza Schouler.
15/23
Jason Merritt/Getty Images
Red Hot
In Dolce & Gabbana.
16/23
Jason Merritt/Getty Images
Suit Up
In Givenchy.
17/23
Steve Granitz/Getty Images
Not-So-Basic-Black
In Yves Saint Laurent.
18/23
Dimitrios Kambouris/WireImage.com
She's Got Legs!
In Diane Von Furstenberg.
19/23
Dimitrios Kambouris/WireImage.com
Super Julia!
In Giorgio Armani.
20/23
Lisa O'Connor/ZUMAPress.com
Red Carpet LBD
In Dolce & Gabbana.
21/23
ROBYN BECK/AFP/Getty Images
Classic Black
In Dolce & Gabbana.
22/23
SGranitz/WireImage
Golden Girl
In Armani.
23/23
Terry McGinnis/Getty Images
And the Oscar Goes To...
In Valentino.