Nicole Kidman let her hair down — and her natural curls out — on her latest family vacation.

The “Babygirl” actress, 58, treated Instagram followers to a series of summer memories Tuesday, including several snaps from a family trip to Croatia that showed off her relaxed beauty.

She previously shared a pic of her natural hair , wearing a white dress and posing on the same trip.

Also on the picturesque vacation were Kidman’s daughters Faith, 14, and Sunday Rose, 17, along with the Oscar winner’s sister Antonia and several of the latter’s six children.

Leisurely days on the Adriatic called for a more relaxed beauty routine than we typically see from the red carpet regular, and her strawberry blond mane was nearly back to its ringlet roots.

In one picturesque scene, Kidman planted a

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