02/12/2013 11:09 GMT | Updated 22/05/2015 06:12 BST

New York City Ballet: Principals

Becoming a principal dancer is a big deal. As Sarah Jessica Parker explains, the principal "carries the weight of a ballet's story" and as the highest rank, it's what every dancer aspires to. However, this role is both physically and mentally demanding. Watch below to hear from the New York City Ballet's current stars: