At 11, while watching a performance of New York City Ballet's Nutcracker, Tiler Peck leaned over to her father and said, "Dad, I'm going to dance on that stage one day." It was a surprising declaration for a competition kid from Bakersfield, California. But her prediction came true: Peck joined New York City Ballet as an apprentice four years later. "It was the challenge that drove me," she says. "I always had natural ability to dance, but when it came to the School of American Ballet, I felt like a jazz dancer trying to do ballet. But I was going to get this. I was going to be a ballerina." Her mastery of timing and crisp lines quickly took her from being a 15-year-old apprentice to a 20-year-old principal. Now, nine years later, she's dazzling audiences at Lincoln Center night after night.