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Britain's Prince William and Kate, Duchess of Cambridge hold the Prince of Cambridge, Tuesday July 23, 2013, as they pose for photographers outside St. Mary's Hospital exclusive Lindo Wing in London where the Duchess gave birth on Monday July 22. The Royal couple are expected to head to London’s Kensington Palace from the hospital with their newly born son, the third in line to the British throne. (AP Photo/Lefteris Pitarakis)

Duchess Catherine's maternity style

The Duchess of Cambridge set new standards in royal pregnancy fashion. Here's a look at her most stunning maternity outfits.