Cameron Diaz looks hot in her kelly green swim suite while vacationing solo in Hawaii. (Photo: Pacific Coast News)

The actress was taking a break and enjoying the perfect weather and sparkling ocean. (Photo: Pacific Coast News)

We have to wonder why she is in Hawaii all alone. (Photo: Pacific Coast News)

Cameron goes for a dip in the Sea. (Photo: Pacific Coast News)

The actress waded and wondered around the rocks and reef. (Photo: Pacific Coast News)