Brianna Carpenter

Biography: Her unique sense of style caught eyes, but it was her voice that caught ears. Brianna, 21, impressed Australian Idol judges at auditions with her beautiful self-composed tune "Jacqueline". While Dicko told her she was the best all day, Kyle seemed worried by the onetime K-Mart employee’s outfit and hair.

Brainna hit the semi-finals with a new hairdo, but the talent remained. Her quirky perfromance of Regina Spektor's "Fidelity" got a big thumbs up from the voting public, who immediately sent her through to the Top 12. Brianna was especially thrilled that she will be perform at the Sydney Opera House for the show's final. "That's awesome!" she said.

Queenslander Brianna is a music student and has studied everything from classical to contemporary and jazz. "I love Jazz," she says. "It's just so smooth and the melodies are always so beautiful."