Last night's Costume Institute Gala offered plenty to marvel at, but it wasn't the red-carpet fashion or the Schiaparelli and Prada dresses encased in glass that had Karolina Kurkova buzzing at the Crown after-party: "I loved the cookies!" the model told Style.com as she made her entrance with Rachel Zoe. "There were a lot of amazing things—Bruno Mars!—but those cookies were really good."