How a Surf Vacation Led to a New Niche in Women's Swimwear An investment-banker-turned-entrepreneur finds success in a line of bikinis designed to stay on, no matter how rough the surf.

An investment banker who worked long hours at a London-based firm, Anna Jerstrom found herself with a glut of unused vacation days when 2009 came to a close. She decided to give surfing camp in Costa Rica a go.

That trip changed everything. Jerstrom, who grew up in Sweden, loved the sport so much she quit her job, moved to Costa Rica and became a surfer.

"It was like Blue Crush, without the handsome leading man," she says. "I was super-scared, but I fell in love with surfing."