Prince William and Kate Middleton shows their excitement at engagement

Prince William and Kate Middleton shows their excitement at engagement

Never-before-seen photograph of Wills and Kate shows their excitement at engagement

3:17 AM on 31st May 2011

Smiles: The Mario Testino picture which appears on the cover of Vanity Fair magazine in July 2011

Smiles: The Mario Testino picture which appears on the cover of Vanity Fair magazine in July 2011

Photographer: Mario TestinoEngaged: Prince William and his then fiancee Catherine Middleton

Portraits: Mario Testino (left) took Prince William and the then Kate Milddleton”s official engagement picture (right) in 2010