Credit: Flynet; News Online

Blue Crush indeed!

In the past, Kate Bosworth has been called out for her pin thin frame, but the Superman Returns star, 28, showed off a sexy, healthier look in Cancun, Mexico Monday.

Accompanied by a female friend (not boyfriend Alexander Skarsgard), Boswroth splashed around on the beach in a bright yellow bikini. Earlier in the week, she set hearts racing when she sunned topless.

The actress has talked before about how she tends to lose weight during times of stress.

"Whenever anything happens that's very painful or stressful, we all lose weight -- my mother, my aunt, my grandmother," she told Vogue.

Looks like Bosworth is a happy girl!