Helen Kate Shapiro (born 28 September 1946) is an English pop singer, jazz singer and actress. She is best known for her 1960s UK chart toppers, "You Don't Know" and "Walkin' Back to Happiness". In 1961, aged fourteen, she had a UK No. 3 hit with her first single, "Don't Treat Me Like a Child" and two number one hits in the UK, "You Don't Know"and "Walkin' Back to Happiness". The latter did not top the UK chart until 19 October 1961, by which time Shapiro had reached 15, on 26 September. She had a No. 2 in 1962 with "Tell Me What He Said", achieving her first four single releases in the top three of the UK Singles Chart.