The competition is held each year at the Phoenix Shopping Centre in Spearwood.
Sienna Perruzza performed strongly, winning herself a day at Pet Rock Media�s recording studio to work on a CD.
�I was shocked and super-excited to win it because that�s what I was hoping for,� she said.
�The competition was tough, I thought I�d have no chance.�
The singer, represented by Monumental Management, was picking out songs to sing last week.
Sienna said her long-term goal was to be a professional singer, but her aim now was to continue her vocal training.