Kate Middleton's maid of honor, little sister Pippa, changed from her white Sarah Burton for McQueen dress and into a green number for this evening's private dinner at Buckingham Palace. Her second dress was designed by British designer Alice Temperley — Pippa was rumored to have been working with Alice for the nuptials, as she and her mom, Carole, were spotted leaving Alice's shop a few weeks ago. Green was a popular color today, as Chelsy Davy wore an Alberta Ferretti suit in the hue and the British prime minister's wife, Samantha Cameron, wore something similar from Burberry. Pippa accompanied Carole, her dad, Michael, and brother James as they headed over to the final event on today's royal wedding itinerary. It's clearly Kate and Prince William's big day, but the festivities of the morning and afternoon have given a new platform to Maid of Honor Pippa. She stunned onlookers in Westminster Abbey this morning with her white frock complementing her tan skin tone and continued to look amazing on her way into the party she was integral in helping to plan.