Pippa Middleton book launch: the outfits Pippa Middleton wasn't content with one look as she promoted her new party-planning guide - the Duchess of Cambridge's sister chose four different outfits for her day in the spotlight. After admitting that she has achieved international fame on account of her bottom, Pippa Middleton knew that her book launch would be a much-photographed affair. Perhaps that's why the 29-year-old went through no less than four outfit changes to mark publication of her party-planning guide. Miss Middleton began the day in a £395 multi-coloured tunic by Paper London. IN PICTURES: Pippa Middleton, who's that girl? For the official launch at Daunt Books in Chelsea, Miss Middleton arrived - via the tradesmen's entrance - in an £815 mulberry dress by Roksanda Ilincic. Once inside, she changed into a £255 Markus Lupfer bodice dress for a teatime children's Hallowe'en party - an event which took an unfortunate turn when a six-year-old girl announced that she "hates princesses." Left: Pippa in a £255 Markus Lupfer bodice dress. Right: For the official launch at Daunt Books in Chelsea, Miss Middleton arrived in an £815 mulberry dress by Roksanda Ilincic. Miss Middleton emerged after dark for a quick turn in front of the press, by now wearing a skater-style skirt and top from Stella McCartney's winter 2012 collection. The party was attended by family and friends but there was no sign of Miss Middleton's sister, The Duchess of Cambridge. A Buckingham Palace spokesman said the Duke and Duchess were at home in Anglesey. The Duchess is a fan of both Ilincic and McCartney, wearing an Ilincic dove-grey dress to a Royal Academy of Arts event and an electric blue Stella dress to the National Portrait gallery. In the introduction to her book, Celebrate , Miss Middleton acknowledges that "it's a bit startling to achieve global recognition (if that's the right word) before the age of 30, on account of your sister, your brother-in-law and your bottom. Speaking outside last night's launch, she said: "I feel incredibly lucky to be in this position to publish a book. It's been a crazy few years since my sister's wedding. It's had its upsides and its downsides and I feel really fortunate to build a career as a writer. Pippa in Paper at the book launch at Foyles.