When surfer girl Bethany Hamilton was attacked by a shark off the North Shore of Kauai, Hawaii, in 2003, she lost an arm--but not her drive. Now 16 and still home-schooled, Hamilton has blossomed as an entrepreneur, building a miniempire of merchandise, including a perfume called Stoked and an eponymous line of accessories sold at teen favorite Claire's. She is also working on a young-adult fiction series and three advice books. "It's been really exciting," she says. "I'm happy I'll be able to tell my story and inspire other girls."
She won't be telling that story for the first time--or the...