Pippa Middleton Finalizes Party Planning Book Deal?

Pippa Middleton keeps it casual in a Fay jacket with brown boots while out on Friday (December 2) in London, England.

The 28-year-old younger sis of the Duchess of Cambridge – and one of Barbara Walters‘ Most Fascinating People of 2011 – was spotted the day before and on Wednesday heading to work after picking up coffee.

Michael Joseph, an imprint of Penguin books, has reportedly outbid several other major publishers to secure Pippa‘s upcoming party planning book – a deal believed to be worth £400,000.

“It will be about entertaining and how to throw the perfect party. It’s not just about being the perfect hostess – it will also include recipes and information about how to host different types of events,” a source explained. “Pippa has been sketching out the chapters and has decided to start each one with an amusing anecdote.”

10+ pictures inside of Pippa Middleton out in London…