Inside scoop on Prince William and Kate's royal life

Gilded Youth, written by author Tom Quinn, contains exclusive testimony from numerous palace staff members and royal insiders.

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According to Quinn's book, Kate refers to Prince William as "babe" and "baldy" while William calls her "Duchess of Doolittle."

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"Duchess of Doolittle" was a "gentle dig" at the Princess of Wales when the late Queen Elizabeth II criticized her for not having a full-time career before marrying Prince William in 2011.

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Kate is the calm one in their relationship, while William is a bit hotheaded, according to Quinn.

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Kate's ability to be unfazed by critics is part of her success in integrating into the British royal family.

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William and Kate want to be seen as an ordinary couple with the same stresses of having children, work, and everything else that life brings.

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They don't want to give the illusion they are "the perfect couple that everyone else should try and emulate."

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