Kristen Stewart wore:

Dress and belt:  Jason Wu

Shoes:  Sergio Rossi

Jewelry:  Neil Lane

She was styled by Tara Swennen.

Diane Kruger wore a modified Jason Wu dress from his Fall 09 collection. Her clutch is Roger Vivier's "Prisme" clutch and heels are also Vivier.  She is styled by Samantha McMillen.

Kirsten Dunst wore a dress from Womenswear Designers of the year Rodarte.  Shoes are from Nicholas Kirkwood.  Her silver clutch was from Ferragamo.  She is styled by Nina and Claire Hallworth.

Kerry Washington wore a gown from Doo.Ri with the Jimmy Choo "Glnys" platform.  Her jewelry was from Movado (she's their current spokesperson).  She carried a clutch from Swarovski.  She is styled by Mariel Haenn & Rob Zangardi.

Hilary Rhoda wore a cutstom dress from Calvin Klein Collection and carried a VBH python clutch.  Here jewels were also from VBH designer Bruce Hoesksema- earrings were 50 carat pear-shaped kunzites surrounded by 23 carat ice diamonds, and rings were 3 carat black diamonds.  She is styled by Mary Alice Stephenson.

Lake Bell wore a bold Louis Vuitton ensemble.  The dress and shoes were from the F/W 09 collection, and her clutch was the "Monogram Brocade" bag.

Ashley Olsen wore a vintage embellished gown.

Claire Danes wore a Narcisco Rodriguez embroidered black silk crepe gown.  Her clutch is Tod's "Upper Clutch Mini" in black leather.  Her jewels are from Tiffany & Co. - diamond & platinum S-row earrings, diamond & platinum bracelet, platinum & diamond rose-cute bracelet.

Heidi Klum wore a dress from her Project Runway co-host Michael Kors.  She wore white-gold mesh & diamond earrings, and a black and white diamond dome ring from Lorraine Schwartz.  Claudia Schiffer may not know who she is, but she seems OK with that!

Blake Lively also opted for Kors - a bright pink summery style she paired with nude Louboutins.  Jewels were Lorraine Schwartz blackened gold and diamond hoops, a black jade and diamond ring and a blackened gold diamond mesh ring.

Zoe Saldana wore Calvin Klein Collection.  Gold & diamond cuff, gold & diamond earrings and her ring were from Neil Lane.  She is styled by Petra Flannery.

Maggie Grace wore a dress from Christian Siriano with Brian Atwood shoes.  Her diamond and platinum stud earrings, bracelet and ring were from Neil Lane.  Styled by Kelly Williams and Jessica Loria.

Tracey Ullman wore a dress from Doo.Ri and Christian Louboutin shoes.  Her clutch was from Anya Hindmarch.  Jewelry was from Fred Leighton.  She was styled by Annabel Tollman.

Melissa George wore a Nicole Miller embellished strapless gown.  (Photo is from afterparty @ The Highline.)

Michelle Trachtenberg wore a cocktail dress from Behnaz Sarafpour and jewelry from Tiffany & Co. She wore a diamond & platinum cluster necklace, pear-cut diamond and platinum braclet and deco diamond and platinum bracelet.  Her ring was an oval sapphire and diamond.  Her shoes were Louboutins.  She did not work with a stylist for this event.

Molly Sims wore the Dolce & Gabbana Marilyn Monroe print cocktail dress.

Padma Lakshmi wore a J. Mendel blush, asymmetrical pintucked dress.  Her jewelry was from her new line, Padma by Padma Lakshmi - gold and diamond briolette hoops, gold and diamond briolette adjustable cluster rings, and a gold and diamond long neckalce.

Mamie Gummer (who is the spokesperson for the wonderful Gerard Darel bags in France) wore a dress from Peter Som and bracelets from Erickson Beamon. 

Model Doutzen Kroes wore Zac Posen.

Whitney Port wore a Luca Luca gown with a pair of Manolos underneath!  Her jewelry was from Kwiat.

Her co-star and "social" Olivia Palermo wore a blush strapless dress with a beaded accent from David Meister.  She carried a vintage clutch and wore shoes from TopShop.  Her jewelry was from Alexis Bittar.  She did not work with a stylist.

Model Lydia Hearst wore a dress from Marc Bouwer.

Model Anja Rubik wore a white, jersey asymmetrical gown from KAUFMANFRANCO.

Harper's Bazaar's newest intern, Tallulah Willis, was also wearing Calvin Klein Collection.

Diane Kruger looking luminous in a Jason Wu dress from the Fall 09 collection, with a Sergio Rossi clutch and her own shoes.  Jager LeCoulture watch, of course.

Katie Holmes wore a Jason Wu dress from F/W 09 to the Japanese premiere of Tom's film "Valkyrie."  Her shoes were the "Dragon" style from LA-based designer Jerome C. Rousseau.  Katie works with stylist Jeanne Yang.

Here's a closeup of the shoe from Jerome ....