Sir Paul McCartney was joined by his glamorous fiancee and a host of A-list celebrities last night at the world premiere of his first-ever ballet score in New York.

Ashlee Simpson starved herself while attending New York City's prestigious School of American Ballet, because she was desperate to compete with other aspiring ballerinas.

Pop star Ashlee Simpson has been keeping a secret from her fans - she once suffered an eating disorder while she was training to become a ballerina.