Kirsty Wigglesworth/AP Photo

She stole the show at the royal party of the century, and now Pippa Middleton has signed on to tell the masses how to throw a party of their own worth stealing.

Middleton, 28, became a household name last April when she famously walked down the aisle of Westminster Abbey in a form-fitting dress as  maid of honor in older sister Kate’s lavish wedding to Prince William.

Now the royal-in-law is back to capitalize on her party prowess with a new book that promises to help even commoners throw a party worthy of a royal.

The Daily Mail reports Middleton has struck a £400,000 ($622,000)  deal with U.K. publisher Michael Joseph, an imprint of Penguin, to write “How to Be the Perfect Party Hostess.”

Plans are for a Christmas 2012 release, in part to avoid any conflict with the queen’s Diamond Jubilee celebrations next summer.

The how-to guide will reportedly include recipes, and personal pointers anecdotes from Middleton herself.

Besides her royal connections, Middleton is well steeped in party planning.  She has professional party-planning experience with London-based Table Talk, and she comes from a family of party planning experts.

Her parents, Michael and Carole Middleton,  own  the U.K. online party supply company Party Pieces, and Middleton contributes to the company’s Party Times online newsletter.

Middleton fans, eager for an early taste of her book, might want to look to her most recent “Party Times” article:  ”10 Tips for a Perfect Family Christmas.”

In addition to her No. 1 tip that underlines the importance of “making a good first impression,” the royal-in-law’s suggestions range from the timeless – baking holiday cookies and creating a Scandinavian gingerbread house – to the modern, such as  doing your Christmas shopping online.

“Have guests met by a beautiful red berry wreath and windows decorated with silver snowflake cutouts, reindeers and Christmas trees using snow spray,” she writes in the magazine’s November issue. ”At this time of year, everything seems to gleam, so fill your house with lots of tiny lights, such as green Christmas fairy lights.”

Who the newly-single Middleton will invite to her Christmas parties remains a mystery.  The highly desired bachelorette split from Alex Loudon, her longtime beau and royal wedding escort, earlier this month.

She set British tabloids ablaze again when she was spotted with a mystery man last weekend watching the final of the ATP World Tour tennis tournament at the O2 in London.

They were joined by another male friend to watch a match between Roger Federer and Jo-Wilfried Tsonga, reported the Daily Mail.