 In 1979, at nineteen, she was appointed "première danseuse".In 1981 Platel started to prepare her first great classical ballet, "La Sylphide" with Pierre Lacotte, her former teacher.La Sylphide, this landmark work from 1832 which introduced romanticism in ballet and made Marie Taglioni a world-famous ballerina, became one of Platel's signature roles during her career at the Paris Opera.