She was infamous for quitting the Australian Idol competition from a condition to her throat at very short notice on the very episode which would determine who would move in to the next round. This caused Channel 10 to issue refunds for all votes for that show.
She grew up in Perth, Western Australia with her Italian family and entered various talent contests while in school. She then went to university to get a Bachelor of Commerce degree.
She was flown to Nashville a few years ago to discuss a record deal but was turned down because of a lack of fanbase back in Australia.
Cosima is reportedly currently cutting her debut album.