Britain's Prince William claps as he talks to Catherine, Duchess of Cambridge as they wait for Olympic torch bearer Wai-Ming Lee to hand over the flame to John Hulse during a visit to Buckingham Palace in London July 26, 2012. (Photo : REUTERS/Ian West/Pool)

The opening day of London Olympics received extra glamour from Kate Middleton, as the Duchess of Cambridge proved her ability to rock the most casual fashion.

Kate Middleton and Prince William, who are official Olympic Ambassadors, clapped away as they watched the torch flame being passed on at Buckingham Palace Friday evening.

Duchess was styled simply in royal blue jeans and Team GB Adidas polo, but the ensemble looked gloriously chic and casual on the brunette beauty, whose trademark bouncy hair illuminated Middleton’s gleaming smile.

As Kate accompanied Prince William and Prince Harry, the trio cheerfully enjoying the historical event, laughing, joking and waving their hands.

They each nominated one person from their charities to carry the torch.

Kate chose Scout volunteer Jon Sayer from Todmorden, while William chose mountain rescuer John Hulse from Ogwen Valley, and Harry selected Wai-Ming Lee from charity MapAction, according to STV.

Middleton’s nominee Sayer even had the opportunity to thank her in person.

“It was an unbelievable honour - a day I won’t forget for a long time,” the dedicated Scout volunteer told the Mirror:

“I got to meet Kate afterwards and we spoke at great length about what we do with our Scouts. She does exactly the same activities on a weekly basis as we do. She said she was loving it,” Sayer said.

“We spoke about the flame and I said ‘thank you for nominating me’ and she said ‘I didn’t put you here, you put yourself here’.”

Sayer saved a man’s life whilst he was a volunteer lifeguard.

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