Duke and Duchess of Cambridge

Britain's Prince William and wife Catherine Middleton celebrate their second wedding anniversary on April 29. The Duke and Duchess are also expecting their first child this year.

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Prince William and his wife Kate, Duke and Duchess of Cambridge, tour the Orchid Garden within the Singapore Botanical Gardens in Singapore on Tuesday, Sept. 11, 2012. The British royal couple is on an official three-day trip to Singapore. (AP Photo/Stephen Morrison, Pool)
Prince William and his wife Kate, Duke and Duchess of Cambridge, tour the Orchid Garden within the Singapore Botanical Gardens in Singapore on Tuesday, Sept. 11, 2012. The British royal couple is on an official three-day trip to Singapore. (AP Photo/Stephen Morrison, Pool)