Kelly O'Brien was born in Australia. She attended the Conservatorium of Music in Sydney.
She won the Talent Contest "Australian National Country Muster" in 1995, which won her a recording contract. She also came second in the TV-Show "Popstars".
She worked as a singer, dancer and moderator in several Australian TV-Shows, such as "Home And Away" and "Good Morning Australia". Apart from that, she worked as a singing coach at Brent St.School of Arts in Sydney.