She was discovered at age thirteen singing at her cousin's weddingand was introduced to the record producer partnership Hugo & Luigi. They gave her the nickname Little Peggy March because she was only 4'10" in height, she was only thirteen, the first record she did with them was "Little Me", and her birthdate was in the month of March.
March's success also came with financial trouble. She was a minor and the Coogan Law prevented her parents from managing her money. The responsibility was placed on her manager, Russell Smith. It was discovered in 1966 that he had squandered the fortune away, leaving her with $500. Peggy graduated from Lansdale Catholic High School in 1966. She soon had a new manager, Arnie Harris, who later on became her husband. They had one daughter, Sande, born in 1974.
Although she is remembered by some as a one-hit wonder, her singles "I Wish I Were a Princess" and "Hello Heartache, Goodbye Love" made the Top 30 in the United States, with the latter also reaching #29 in the UK Singles Chart.She recorded 18 singles for RCA between 1964 and 1971 and several albums as well, none of which charted in any serious way in the United States.She began making a strong presence in the European and Asian music markets, and she moved to Germany in 1969.Her commercial success in Germany continued through much of the 1970s and she also tried her luck in representing Germany in the Eurovision Song Contest in 1969, only to be placed second in the national final with the song "Hey! Das ist Musik für Dich". March made another Eurovision attempt in 1975, when she performed the Ralph Siegel composition "Alles geht vorüber" in the German national contest. Again she was placed second.
In 1979 she experimented with disco on the album Electrifying, but it failed to achieve commercial success. By 1981 record companies did not renew her contracts, and she moved back to the United States. The cultfilmHairspray featured "I Wish I Were a Princess" in 1988, and a retro fad in Germany brought her some continuing success starting in the mid 1990s. Her song "I Will Follow Him" was featured in the 1992 movie Sister Act. Currently she works largely in the Las Vegas music scene. March also currently performs at Dick Clark's American Bandstand Theater in Branson, Missouri.