Don't Miss:

Pippa Middleton‘s party-planning book, Celebrate: A Year of Festivities for Families and Friends, is out today! Just in time for Halloween, the new tome includes the royal-in-laws’ advice for throwing a spooky soiree—from food to decor. “There is no such thing as overdoing it,” Pippa writes. Could we love her any more?! Order a copy now ($50; at amazon.com) to get all the It Brit’s entertaining tips and tricks. Plus, find out who designed the four looks (above) that Middleton wore in one day during a promotional book tour.

Check out Pippa’s best outfits ever!

MORE:
• Found! Pippa’s Metallic Dress
• Who Makes Pippa’s Necklace?
• Middleton’s Denim Statement