The actress who portrays Kylie Minogue in the new Inxs mini-series Inxs: Never Tear Us Apart discovered her mother had been diagnosed with cancer days before the premiere.

Newcomer Samantha Jade was getting ready to celebrate her big debut as an actress when she learned of her mum's health emergency.

She tells the Sydney Daily Telegraph newspaper, "Basically that day we didn't know how long we would have her for.

"At the moment it is a day-to-day thing and I have to be grateful every day and tell my mum I love her and ask for everyone to keep giving that positivity. It must be helping because she is still here.

"I believe in miracles, so we are just keeping positive and praying as much as we can. Every day now is a gift."