Principal dancer
Seo's debut performance as Principal dancer in 2012 was as Princess Aurora in "The Sleeping Beauty" and the Swan Queen in "Swan Lake". Seo has said that "Swan Lake" was her most challenging ballet. The iconic classic ballet is notoriously difficult and demanding. The lead ballerina performs the contrasting roles of Odette, the White Swan, and Odile, the Black Swan. In an interview with "Pointe" magazine, Seo said that she "prefers the mental and physical challenge of full-length ballets over repertory works". In particular, Swan Lake "is physically and mentally exhausting, but so beautiful."