True to form, Naomi Watts [1] dazzled in a Givenchy Haute Couture custom gown at the Costume Institute Gala at the Metropolitan Museum of Art in NYC on Monday. However, this year, she didn't have partner Liev Schreiber [2] by her side. The Met Gala has played a pivotal role in their relationship — the actress revealed she got "ballsy" and made the first move on him [3] at the 2005 event. Nine years later, the couple is busy juggling projects and raising their two children, Sasha and Kai, in LA. Last month, Naomi got a chance to let loose during a star-studded ladies' night out [4] with pals Gwen Stefani [5], Gwyneth Paltrow [6], and Nicole Richie [7]. Keep reading to see her glamorous night, and be sure to check out the all-time best dressed guests from the Met Gala [8].