Paparazzi's darling Pippa Middleton never disappoints. After making news for her famous derriere, the 29-year-old is out and about launching her new book which is a party guide called "Celebrate: A year of Festivities for Families and Friends", according to a report by the People magazine.

The sister of The Duchess of Cambridge seems to have put in a lot of thought for the launch timing, considering it is perfectly in sync with the holiday season. The book might have been about party planning and garnered mixed reviews, but the younger Middleton missed no chance of flaunting her sense of style.

For the British launch of the book, Middleton went through four changes of her outfits, according to huffingtonpost.com. That's some patience, we must say. She was first present at the Foyles Bookshop where she appeared for her first book signing. Sporting a cheerful long-sleeved dress which featured a black, blue, purple and fluorescent yellow color blocked pattern, Middleton left her tresses loose and posed with the book.

Patronizing one of her sister's favorites, she then changed into a Roksanda Ilincic dress worn with a pair of black stilettos and her hair was pulled up in a partial updo framing her face. She accessorized the dress with a black tote. The plum-colored dress clung to her curves and she flaunted glossy lips and a hint of blush.

The English socialite was later seen playing games with children who were dressed in various costumes for a Halloween party. Her third outfit was an LBD with green embellishments by Markus Lupfer. She accentuated her tiny waist with a black belt and teamed the dress with black opaque tights.

For the evening, Middleton wore a gray and black paneled dress by renowned designer Stella McCartney. The piece featured a peplum design and she added on a pair of suede black heels. Accessorizing with chandelier earrings, the Briton sported pink lips.

The launch event of Middleton's first book was also attended by her parents Michael and Carole Middleton, and brother James. The book retails at $40 approx, out of which about $8 will go to charity.