2013 Oscars Who Wore What...
Adele - Jenny Packham dress with Lorraine Schwartz jewelry
Alicia Quarles - George Chakra
Alicia Vikander - Elie Saab
Amanda Seyfried - Alexander McQueen (custom) with Lorraine Schwartz jewels and Roger Vivier shoes
Amy Adams - Oscar de la Renta
Anne Hathaway - Prada with Tiffany jewels, custom vegan Giuseppe Zanotti shoes and a Roger Vivier bag
Ben Affleck - Gucci
Bradley Cooper - Tom Ford
Catherine Zeta Jones - Zuhair Murad with Lorraine Schwartz jewels
Channing Tatum - Gucci
Charlize Theron - Christian Dior with Harry Winston jewels and Roger Vivier shoes
Daniel Day-Lewis - Domenico Vacca
Daniel Radcliffe - Prada
Eddie Redmayne - Alexander McQueen
Emmanuelle Riva - Lanvin
Fan Bingbing - Marchesa with Chopard jewelery and Roger Vivier clutch
George Clooney - Giorgio Armani
George Kotsiopoulos - Dolce & Gabbana
Halle Berry - Versace
Heidi Klum - Julien MacDonald
Helen Hunt - H&M with Martin Katz jewelry sewn onto dress
Helena Bonham Carter - Vivienne Westwood
Hilary Swank - Valentino
Hugh Jackman - Tom Ford
Jane Fonda - Versace
Jennifer Aniston - Valentino with Fred Leighton jewels and Salvatore Ferragamo clutch
Jennifer Garner - Gucci with Neil Lane jewelry and Roger Vivier clutch
Jennifer Hudson - Roberto Cavalli with Sutra jewelry, Giuseppe Zanotti shoes and a Jimmy Choo clutch
Jennifer Lawrence - Christian Dior Couture with Chopard jewels, a Roger Vivier clutch and Brian Atwood shoes
Jeremy Renner - Givenchy (custom) with a Van Cleef watch
Jessica Chastain - Armani Prive with Harry Winston jewels and Christian Louboutin shoes
Jessica Chastain's grandmother - Michael Kors
Justin Theroux - Salvatore Ferragamo
Kelly Osbourne - Tony Ward Couture
Kelly Rowland - Donna Karan Atelier
Kerry Washington - Miu Miu with Fred Leighton and Chopard jewels, Christian Louboutin shoes and a Prada bag
Kristen Stewart in Reem Acra with Jimmy Choo shoes and Fred Leighton jewels.
Kristin Chenoweth - Tony Ward
Marcia Gay Harden - David Meister with John Hardy jewels and a Swarovski clutch
Maria Menounos - Romona Keveza
Melissa McCarthy - David Meister
Miranda Kerr - Valentino
Naomi Watts - Armani Prive with Neil Lane jewels, Jimmy Choo shoes and Roger Vivier bag
Naomie Harris - Eco Michael Badger / Vivienne Westwood
Nicole Kidman - L’Wren Scott with Fred Leighton jewels and L’Wren Scott shoes and bag
Norah Jones - Tadashi Shoji
Octavia Spencer - Tadashi Shoji with Lorraine Schwartz jewels, Edie Parker clutch and Prada shoes
Olivia Munn - Marchesa
Quvenzhané Wallis - Armani Junior with Poochie & Co. bag
Reese Witherspoon - Louis Vuitton with Louis Vuitton jewels
Renee Zellweger - Carolina Herrera
Robin Roberts - Marc Bouwer
Sally Field - Valentino
Salma Hayak - Alexander McQueen
Samantha Barks - Valentino with Forevermark jewelry
Sandra Bullock - Elie Saab Couture with Daniel Swarovski clutch
Stacy Keibler - Naeem Khan with Lorraine Schwartz jewels, Giuseppe Zanotti shoes and a Tiffany & Co bag.
Zanna Roberts Rassi - Viktor and Rolf
Zoe Saldana - Alexis Mabille Couture with Neil Lane jewelry, Roger Vivier shoes and a Salvatore Ferragamo clutch
Sources: E! News, justjared, redcarpet-fashionawards, Tom and Lorenzo, nymag and tFS
Feel free to add, correct and update