The Duke and Duchess of Cambridge were guests of honor at the Our Greatest Team Rises Gala Olympic Concert held at the Royal Albert Hall on May 11, 2012. It was an evening marking the final countdown to the 2012 London Olympics. The event also helped to raise funds to help the competitors. Catherine delighted the crowds when she arrived in an elegant flowing gown by one of her favorite designers, Jenny Packham. The teal colored pleated gown shimmered with tiny crystals sewn into it. The back was especially striking with its lace panel. The Duchess of Cambridge chose to wear her hair knotted in a chignon to finish off the look. Photos by Bauer Griffin, PacificCoastNews.com, and Getty Images.