Gwyneth Paltrow might be the happiest person to don a bikini, ever. And why not? She's Gwyneth Paltrow, after all.

The 40-year-old actress was jumping for joy in her bikini designed by pal Stella McCartney, who just happened to be snapping photos of the Goopster in a picturesque backyard. The designer shared the snapshot on her Instagram account on Wednesday, and captioned it: "Sexy lady in Stella swimwear! Summer never stop! x Stella"


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