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In an interview with America's The Today Show, which will air on Monday and Tuesday, the 30-year-old told presenter Matt Lauer 'what it's like to be Pippa Middleton'.
A teaser for the two-part interview was released on Wednesday, showing Pippa and Matt enjoying tea outside in a picturesque garden in London.
Fresh from her gruelling charity cycle ride across the US, the Berkshire-born socialite apologised to Matt that he had had to travel to England to interview her.
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"I hate to say it but I was actually in America last week," she said, prompting Matt to joke to his colleagues in New York, "and instead of me being able to interview her there, I had to fly 3,000 miles."
Pippa released Celebrate: A Year of British Festivities for Family and Friends in 2012
Until now, Celebrate author and Waitrose magazine columnist Pippa has never publically spoken about her personal life nor what it was like to be a bridesmaid when her sister Kate Middleton tied the knot with Prince William.
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The Edinburgh University graduate's interview is hot on the heels of her 3,000 mile cycling challenge, and comes shortly before she will head to Istanbul with her brother James Middleton to take part in the Bosphorus Cross-Continental Race Swimming Race; a 6.5 km swim across the Bosphorus Strait.