Julia Roberts showed off her young body in “Green Bikini” at Kauai, Hawaii

Most 44-year-old women would love to have figure like Julia Roberts but perhaps the actress isn't so comfortable in her own skin.

While on holiday in Hawaii this weekend, the Pretty Woman star displayed her flat stomach in a green two piece, but the following day she kept her enviable curves hidden.

The U.S. star is enjoying the sunshine break with her seven-year-old twins Hazel and Phinnaeus "Finn" Walter Moder and her five-year-old son Henry.

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Now you see it, now you don't! Julia Robert shows off her impressive figure but decides to cover up the following day while on holiday in Hawaii (Read more and See more Pictures)