Celebrate: A year of British festivities for family and friends is out in the UK today, accompanied by some fresh-faced shots of the Middleton sister with the infamously-celebrated rear.
Speaking of her first book, Middleton said: "Entertaining on any scale can be stressful and daunting so this book is all about finding ways to manage and enjoy the process.
"It is a useful and practical journey into British-themed occasions and I hope it offers welcome inspiration and ideas, most of which needn't leave you alarmingly out of pocket.
"I hope you will see this as a feel-good book with ideas to look forward to each month, providing threads of lasting, happy memories, be it around a table lit with candles in winter, outside on a rug in summer or in the autumn, perched on a leaf-covered bench, hot drink in hand."
Middleton offers advice on how to play conkers, toast marshmallows over an open fire, make breakfast in bed, rustle up a quick 'venison and beetroot stew', and culinary tips like sprinkling scrambled eggs with 'inexpensive caviar and truffle oil'.
There is also advice on how to make the perfect cup of tea and roast a chicken in the debut book which has reportedly scored her a £400,000 deal.
Although Kate's not named-dropped in the book, Pippa frequently recalls her childhood memories.
In one part, she says: "I have funny memories of creeping up the stairs with my brother and sister, carrying a breakfast tray for our parents as a surprise treat: desperately trying not to spill the tea and orange juice or knock over the vase of flowers, stifling our giggles so that they couldn't hear us coming."
It is doubtful that Kate will be able to make the private launch party tonight, as she's not allowed to be seen endorsing commercial enterprises.
Prince Harry has reportedly been reading extracts from the book to his army colleagues to amuse them.