The Look: It felt only natural for the Miller sisters to launch their own vibrant line seven years ago, having been raised in a family of surfers (Oleema was a pro before starting Mikoh).

The Sunscreen of Choice: "Shade sunscreen ($32, shadesunscreen.com) goes on so smooth," says Kalani, who's meticulous about using it on her neck.

1. Mikoh Africa one-piece in Botanical Makai. 2. Shade SPF 40+ Opaque.

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