I'm Outta Love shot her to worldwide fame in 2000, with her popularity continuing to rise with the global success of songs Left Outside Alone and Sick and Tired.Now, she's back in the spotlight in Australia thanks to a well-founded rumour that she's the Vampire on The Masked Singer Australia.WATCH: Vampire performs on The Masked SingerAfter facing breast cancer twice and taking time to focus on her health, Anastacia, now 53, is back on our minds thanks to the Australian reality TV