51327530 Catherine, the Duchess of Cambridge is seen leaving the National Portrait Gallery in London, UK on February 11, 2014. The new mother looked every inch the elegant princess in a navy blue gown. She wore her wavy brown locks loose around her shoulders and an eye-catching diamond necklace FameFlynet, Inc – Beverly Hills, CA, USA – +1 (818) 307-4813 RESTRICTIONS APPLY: USA ONLY
