Duchess of Cambridge relaxes for Vogue centenary photo shoot

Two new portrait pictures of the Duchess of Cambridge have gone on public display.

The pictures, which went on display on today, are a departure from more formal official Royal family photographs and show Kate relaxed and smiling in the Norfolk countryside.

Taken by British photographer Josh Olins, the portraits are on display in the National Portrait Gallery - of which Kate has been a patron since 2012 - as part of an exhibition marking 100 years of Vogue magazine.

A Kensington Palace spokesman said the Duchess had been "delighted" to take part.

"She is incredibly grateful to the team at Vogue and at the National Portrait Gallery for asking her to take part," he added.

"She would like to thank Josh Olins for being such a pleasure to work with."

A further five pictures, all styled by British Vogue fashion director Lucinda Chambers, will run alongside an article in the centenary edition of the fashion magazine released next week.

Vogue 100: A Century Of Style will run at the National Portrait Gallery in central London until May 22.