Khloe Kardashian shows off her slender physique during Malibu beach day with True and her nieces

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She welcomed a baby boy via surrogate last month.But Khloe Kardashian enjoyed some quality time with her daughter True, four and her nieces Penelope Disick, 10, North West, nine and Chicago West, four, on Tuesday with a girls' day at Malibu beach.Khloe showed off the results of her gruelling workouts in a pair of black leggings and a sleeveless top as she chased around after the girls.

Girls' day: Khloe Kardashian enjoyed quality time with her daughter True, four and her nieces Penelope Disick, 10, North West, nine and Chicago West, four, on Tuesday at Malibu beachKhloe kept her look casual for the fun day out, leaving her long blonde hair loose and wavy and wearing minimal makeup.

She added a pair of oversized sunglasses and went barefoot as she ran in and out of the surf with the gaggle of girls.Little True looked sweet in a bright pink swimsuit while Chicago, who is the daughter of Khloe's older sister Kim, matched in a blue version.

Looking good: Khloe showed off the results of her gruelling workouts in a pair of black leggings and a sleeveless top as she chased around after the girlsKim's eldest North and Kourtney Kardashian's daughter Penelope matched in their black t-shirts and shorts.The girls looked like they were having the time of their lives, having races on the beach and paddling in the ocean.