At the age of three, Wendy Whelan began taking dance classes in her hometown of Louisville, Kentucky. She went on to train at the School of American Ballet, the official institute of the New York City Ballet and eventually worked her way up the ranks, from the corps de ballet to principal dancer. Whelan has been featured in many ballets, including The Nutcracker and Swan Lake, and has toured extensively throughout the world. In 2007, she also received a Dance Magazine Award.

A principal dancer at the New York City Ballet reviews Black Swan and Nataalie Portman's stunning performance—and says the movie captures the head trips that every great dancer faces.