Inside the Star-Studded CFDA Awards Parties

Before presenting Givenchy's designer Riccardo Tisci with the International Award, Jessica Chastain pulled him in for an early celebratory hug during the awards pre-show cocktail reception.

The pair looked like a vision of primary colors with Washington in citron Jason Wu and Vergara in emerald Herve L. Leroux.

CFDA President Diane von Furstenberg and awards show host Andy Cohen pow-wowed backstage before the night began. "I'm going to keep it clean, keep it short," Cohen told us on his approach for the night. "I'm not going to do anybody but me."

High fives all around! Kerry Washington (in Jason Wu) congratulated Proenza Schouler designers McCollough and Hernandez on winning the Womenswear Designer of the Year award for the third time.

Elizabeth Olsen supported her sister Mary-Kate (both in The Row) at the 2013 CFDA Awards pre-show cocktail reception.

Karlie Kloss donned a chic Cushnie et Ochs cutout gown as she posed with the label's designers, Michelle Ochs and Carly Cushnie, who were nominated for the Swarovski Award for Emerging Talent for Womenswear. "This is our first time being here," Cushnie told InStyle.com. "It’s such a crazy red carpet. It’s a really fabulous night, so it’s just awesome to be here."

What a good-looking pair of presenters! There to present awards, Ethan Hawke (in Calvin Klein) and Rose Byrne (in Thakoon) smiled together on the red carpet during the pre-show cocktail reception.

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funny lady Kemper (in Naeem Khan) relaxed with designer Naeem Khan and his wife Ranjana at the after-party, held at The Top of the Standard in New York City. "He’s so much fun to be with," Kemper told InStyle.com of the designer. "I was watching his shows on the way here, and it’s one after another of glamorous dresses."