Kate Middleton’s Brother James Goes Running on the Beach in St. Barth’s With Fiancée Alizee Thevenet

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James Middleton, brother of Kate Middleton, was spotted running on the beach today alongside fiancée Alizee Thevenet.

James, 32, wore navy board shorts with blue and neon green running sneakers. The entrepreneur went shirtless for his casual morning run.

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Meanwhile, Thevenet sported a gray T-shirt and white and blue patterned shorts. The French financial expert completed her ensemble with cream-colored running shoes.

On the beach, footwear’s optional — and in fact, it’s a no-no for certain water activities.

While swimming yesterday, James’ sister Pippa realized that shoes weren’t required. The 36-year-old skipped even flip-flops for a day spent playing in the water and cruising around on a boat.

Pippa wore a black-and-white printed bikini from Asceno. The top sells for $125 on Matchesfashion.com, while the bottom costs $114 from the same site.

The shoeless look was perfect for the magazine writer to show off her pedicure, a cherry red color that popped. When she’s not vacation-bound, Pippa can typically be found in shoes from brands like Hoka One One, Castaner and Stella McCartney.

Missing from the Middleton family’s holiday festivities was Kate, as the Duchess of Cambridge spent her holiday with the royal family at Queen Elizabeth II’s Sandringham estate.

Click through the gallery to see more of Pippa Middleton’s vacation style during her 2017 honeymoon with James Matthews.

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Pippa Middleton Sports New “It” Sneaker Brand on Walk With Baby Arthur

Pippa Middleton Joins Meghan Markle and Kate in the Royal Box on Centre Court at Wimbledon

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