“@rebeccaromijn with these two 8-year-olds!” O’Connell, 42, wrote next to a photo of the fit mom of two, 44, wading in the water with Dolly and Charlie.
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Among the other glimpses into the family’s vacation — similar to last year’s tropical adventure — include one of dad O’Connell paddleboarding with his smiling birthday girls amidst a lush landscape of blue-and-green ocean.
Even when O’Connell and the twins wipe out in the water, they can’t help still looking like they’re having a blast.
“My little 8yr olds. Big girls now,” Romijn captioned her own snap of mom and daughters in the water, writing next to a similar one, “How can I convince Dolly to wear this bathing suit forever …”
Romijn later shared an evening shot of all three ladies smiling for the camera. “2017. Here we go,” she wrote.