 On television in November 1957, Nelson co-starred with Van Johnson in the television film "The Pied Piper of Hamelin", which aired on NBC as a Thanksgiving Day television special.Also in 1957, she was cast in one of the three lead roles in the syndicated sitcom "How to Marry a Millionaire".Based on the 1953 film of the same name, Nelson starred as "Greta Hanson", a brainy psychology major who works as an usher on a television game show.