The We Are Your Friends star shared a series of bikini pictures from her island getaway to social media over the weekend, including one photo where she appeared to be topless.
In the Sunday selfie the 24-year-old looked sun-kissed, with a floral white and pink lei around her neck. Ratajkowski's tousled hair covered her shoulders and she wore a body chain.
In another image, the model donned the same chain and a black bikini as she stood under the shade of a few palm trees.
"Island baby," she wrote.
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Earlier in the week Ratajkowski visited Thailand's capital Bangkok to enjoy what she dubbed the "street food of dreams." Before that, she stopped off in Japan.
Ratajkowski isn't afraid to show off her toned figure – she most recently stripped down for LOVE Magazine's sexy advent calendar.