Kate Hudson Takes a Mud Bath in a Teeny Bikini

Kate Hudson
Kate Hudson worked her butt in a teeny, cheeky bikini while taking a mud bath in Formentera, Spain, on Thursday, July 14. FameFlynet

Hola, abs! Kate Hudson showed off her incredibly toned bikini body (and perfect tush!) while enjoying a mud bath on Thursday, July 14, in Formentera, Spain.

PHOTOS: Kate's Flawless Bikini Body

The Mother's Day actress, 37, flaunted her flawless frame in an itsy-bitsy rust-hued bikini — a near perfect match to the mud she lathered all over herself. While the bandeau top featured a slight plunge with a printed trim, the cheeky bottoms, which showed off most of her derriere, had multi-colored stripes.

The Fabletics co-founder, who just launched brick-and-mortar shops for her athletic clothing brand, was with friends on in the Balearic Islands. Just north of Formentera is the teeny private island of Espalmador, where Hudson and her cohort enjoyed the famed mud baths.

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The actress also shared a few sunny shots from her travels via Instagram. One shot featured herself and her friends lounging in bikinis ("ladies who lunch together stay together," she captioned), and another pictured the sun above the sparkling ocean.

Kate Hudson
Kate Hudson shows off her pert derriere in a sandstone bikini in Formentera, Spain. FameFlynet

The week before, Hudson reunited with her ex Matt Bellamy to celebrate their son Bingham's fifth birthday. (The Glee alum also shares 12-year-old son Ryder with her ex-husband, Chris Robinson.) Bellamy, Hudson and the boys feted the milestone in a very special way: by jetting to London to see the new Harry Potter play, Harry Potter and the Cursed Child.

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The Muse frontman shared a group photo snapped outside the theater via Instagram. While Bingham had his face hidden in his mother's shoulder, Ryder could not contain his excitement with a huge gasp. "Happy Bday Bing!!!" Bellamy captioned the pic. "#harrypotterandthecursedchild @katehudson xxx."

Hudson also posted a photo, cuddled up in bed with her little boy. "And with a snap of my fingers, five years flew by….," she wrote. "Happy Birthday Bingo 💫 #MorningSnuggle #5YearsOldToday🎈 🎂🎉🎈."

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