When Sarah-Gabrielle Ryan was 5 years old, her mother took her to a Pennsylvania Ballet production of Swan Lake. "One day, you'll be a ballerina," her mother said. Ryan replied, "I already am one." Even at that age, Ryan was confident about her future; with good reason, it turns out. Sixteen years later, she's starting her third season at Pacific Northwest Ballet. Though still a corps member, she's already danced Sugar Plum Fairy, featured roles in Crystal Pite's Emergence and William Forsythe's New Suite, and the pas de deux in Balanchine's "Rubies."