By Meghan Blalock
Updated Oct 25, 2012 @ 5:11 pm
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Pippa Middleton Book
Credit: David Levenson/Getty (4)

With Pippa Middleton’s party-planning book Celebrate: A Year of Festivities for Families and Friends set to hit shelves on October 30th, the sister of everyone's favorite Duchess is gearing up for its big launch. Today, she made four different appearances—in four different outfits—one of which was for an afternoon children's Halloween party in London, where she was able to put some of her great advice for the spooky holiday into action. Pippa writes that she "frequently celebrates Halloween over a supper with friends. It's a wonderful excuse to let your imagination run riot with gory-looking food and special effects... there is no such thing as overdoing it." Some of her top tips? In lieu of carving a pumpkin, leave it whole and poke sticks into it, then attach "cocktail sausages, tomatoes, and mini mozzarella balls" onto the ends, for guests to nibble on. (Or try the ghost lollipops, shown above!) She also recommends pumpkin bowling. Pippa, you're so much fun! We wish she would plan our Halloween bash.

Plus, see more celebrities in the Halloween spirit!