Before Pippa Middleton marries former race car driver James Matthews on May 20, her big sis, the Duchess of Cambridge, Kate Middleton, is pulling out all the stops for a bachelorette party, Life & Style has learned.

“Kate is arranging a no-expenses-spared weekend at a luxury resort in the Swiss Alps for Pippa and 15 of her closest friends,” a source reveals of the girls' trip.

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The activities list includes skiing, snowmobiling, ice-skating and massages. Plus, the source notes, “Kate is hiring private chefs to cook a lavish 10-course tasting dinner featuring some of Pippa’s own dishes.”

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Pippa with fiancé James Matthews.

However, Kate is still working out the details on the weekend’s real showstopper: “She’s arranging surprise performances by the likes of Ellie Goulding,” the source explains, “and possibly some even bigger stars.”

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For more on Pippa’s bachelorette weekend, pick up the latest issue of Life & Style, on newsstands now!

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