Meet the Racy Middletons: Who's the 'Trolley Dolly?'

With the royal wedding less than a week away, "Extra's" royal insider, Mr. Paparazzi, breaks down the scandalous Middleton family ties and reveals their humble beginnings.

The Middletons come from a working class background and started a successful party business, Party Pieces, in the '80s. Prior to the business, Kate's parents, Carole and Michael, met when they were both employed at British Airways -- Michael as a flight dispatcher, and Carole as a flight attendant, or "trolley dolly," a mocking nickname that has proved difficult to escape.

"They're millionaires, not multi, multi, multi. They've got a few quid," Mr. Paparazzi tells "Extra."

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The royal expert goes on to reveal the colorful family history. "Kate's younger sister, Pippa, is famed for one party trick; stripping naked [and] wrapping herself in toilet paper, then climbing to the top of a human pyramid." There's also cousin Katrina Darling... who enjoys stripping to patriotic music, according to the Daily Mail. Kate's youngest sibling, James, 23, is most famous for appearing in a series of photos on the internet wearing makeup and one of his sister's polka dot dresses.

Perhaps the biggest shocker and black sheep of the family is Kate's uncle -- wealthy property developer Gary Goldsmith, who once dated a stripper and reportedly keeps a box of cocaine at the bottom of his bed. Goldsmith, 45, owns an $8-million mansion on the island of Ibiza, where his niece and William vacationed in 2006. Upon their first meeting, Uncle Gary famously said to Prince William, "Oi, you f**ker!"