Kate Nash performs music.
`` Do-Wah-Doo '' is a song by English indie pop singer-songwriter Kate Nash , featured on her 2010 second album My Best Friend Is You ( 2010 ) . Kate Marie Nash ( born 6 July 1987 ) is an English singer , songwriter , musician and actress . Nash rose to prominence in the UK with the sleeper hit `` Foundations '' ( 2007 ) . My Best Friend Is You is the second studio album by English singer-songwriter Kate Nash , released in the United Kingdom on 19 April 2010 and elsewhere on 20 April .