Kate Bosworth -- Beach Body Alert!

Kate Bosworth seems to be having the time of her life on the beach with British beau James Rousseau and her girlfriends!

The cozy couple snorkeled and jumped around on a water trampoline as they continued their Hawaii getaway on Monday. I’m sure Kate appreciated the extra “lift” up the trampoline that James provided.

James, 25, flew into Hawaii to join Kate, 24, after she was invited to attend a Fleetwood Mac concert held on the islands.

30+ pictures inside of James and Kate…