The 30-year-old, who was propelled into the spotlight at the royal wedding, had a sit-down chat with American journalist Matt Lauer for NBC's Today show.
Lauer, who travelled to London to interview the party planner, revealed in a preview that they spoke about "what it is like to be Pippa Middleton".
The Middleton family has so far always been cautious about speaking to the press. But the interview has prompted suggestions that Miss Middleton may be offered a role as a correspondent for the show.
Lauer, who sat at a table with Miss Middleton in a sunny garden as part of a live video link-up to promote the programme, said: "We talked a lot in just the last hour about this great bike event she did across America, money she raised for two really great charities, and we are also going to hear about what is like to be Pippa Middleton."
Miss Middleton last week took part in a 3,000-mile (4,828km) charity cycle ride across the US.
Kate's sister, who is a columnist for Waitrose's monthly magazine, gained notoriety for her figure-hugging bridesmaid's dress when Kate married the Duke of Cambridge in 2011.
''It's startling to achieve recognition on account of your sister, brother-in-law and bottom,'' she later admitted.
Her party book, Celebrate, was marketed as a one-stop guide to entertaining throughout the year. But the publication was mocked by some for its over- simplistic advice and even sparked a parody Twitter account, @PippaTips.
The interview will be shown in the US in two parts - on Monday and Tuesday next week.