Sister2Sister or S2S were an Australian duo comprising the Muscat sisters , Christine and Sharon , who were pop singers , songwriters and television presenters . Their debut album , '' One '' ( June 2000 ) , peaked at No . 3 on the ARIA Albums Chart . It provided two top five singles , " Sister " ( 1999 ) and " What 's a Girl to Do ? " ( 2000 ) . At the ARIA Music Awards of 2000 " Sister " won Best Independent Release . From 2001 they undertook a career as television presenters , as VJs on '' MTV Hits '' , and subsequently opened the Sister2Sister School of Singing in 2004
ARIA Music Awards of 2000
ARIA Music Awards of 2000
Sister2Sister