Kate Middleton, our favorite duchess, attended a gala in London looking spectacular in a sparkly Jenny Packham gown. Coincidentally, Leighton Meester sported the same gown in a recent episode of Gossip Girl. Kate looks ultra glamorous in her pale pink dress, and for those of you who want to emulate Kate's elegant style, you're in luck. You can shop the gown right now, yours for a cool $3,515. Want to see more? Click on our slideshow for all the angles on Kate's sparkling outing, a close-up of the dress, and to see how Leighton wore it for her onscreen appearance.