The Windsors and the Middletons each are known for their own specific products. For the royal family, let's be honest: It's heirs to the throne. Liz had them. Diana had them, and, by all indications, Kate and Will plan to make some, too. But what about the Middletons? Well, Party Pieces, operated by Kate's parents, sells supplies for children's events. Hello Kitty pinata, anyone?
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