William and Kate arrived in Ottawa, Canada on Thursday for their first official foreign visit as a married couple.

Just like Michelle Obama, what Kate will wear attracts a lot of attention. She even has her own website that chronicles all her clothes called What Kate Wore. If you know Duchess had changed her clothes on Thursday, you can understand how the website is indispensable.

Even when Kate was William's girlfriend at St. Andrews University, what she wore already became the hot topic. Now Kate's fashion influence the whole world. In another word, Kate Middleton's evolution creates fashion revolution.

Kate Middleton in Alexander McQueen for her wedding reception
Kate Middleton at Buckingham Palace. Reuters
Kate Middleton
Kate Middleton in Canada Day celebrations on Parliament Hill in Ottawa. Reuters
Kate Middleton in Erdem
Kate Middleton, Duchess of Cambridge, at Macdonald-Cartier International Airport. Reuters
Kate Middleton in Alexander McQueen
Kate Middleton, Duchess of Cambridge, on Armed Forces Day in Windsor, southern England. Reuters
Kate Middleton
Kate Middleton at the Wimbledon tennis championships in London. Reuters
Kate Middleton
Kate Middleton at the Order of The Garter Service in Windsor, England. Reuters
Kate Middleton in Issa London
Kate Middleton, in Windsor, west of London. Reuters
Kate Middleton
Kate Middleton at the Trooping the Colour ceremony in central London. Reuters
Kate Middleton
Kate Middleton at the 10th annual Absolute Return for Kids (ARK) gala dinner at Kensington Palace in London. Reuters
Kate Middleton wearing the 84 Zara dress the morning after her wedding
Prince William and Kate Middleton in Buckingham Palace. Reuters
Kate Middleton
Kate Middleton in Gloucestershire, western England. Reuters
Kate Middleton
Kate Middleton at Westminster Abbey in central London. Reuters
Kate Middleton in Issa London
Kate Middleton at The Goring hotel in London. Reuters
Kate Middleton
Kate Middleton at Witton Country Park in Darwen, northern England. Reuters
Kate Middleton
Kate Middleton in St. Andrews University in Fife, Scotland Reuters
Kate Middleton
Kate Middleton, at Trearddur Bay Lifeboat Station, in Trearddur Bay, Anglesey in north Wales. Reuters
Kate Middleton
Kate Middleton in St. James's Palace, central London. Reuters
Kate Middleton
Britain's Prince William and Kate Middleton, at RAF Cranwell, central England. Reuters
Kate Middleton
Kate Middleton in Gloucestershire, Western England. Reuters
Kate Middleton
Kate Middleton in Gloucestershire, Western England. Reuters
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