It's been both a painful and emotional time for the Australian pop superstar.
But just over a year after receiving the devastating news, she's decided to talk publicly about her ordeal, and the affect on her family.
While it may have been a difficult time for her, cancer charities say that more women are now being checked because of the so called 'Kylie effect'.
There's also information and advice from the above charities via the links to the right of this page
Kylie said described the moment when her diagnosis was confirmed.
She told Cat Deeley, for the interview on Sky One, "It's like a bomb has dropped".
The interview can be seen on Sunday at 9.00pm; Kylie goes on to say she had just a day between her diagnosis and an operation on her breast.
"I had one day's grace where I knew and went for a walk down to the beach..."
The Kylie effect
We spoke to mother of three Sarah O'Brien who was diagnosed with breast cancer on exactly the same day as Kylie.
Sarah said she had initially ignored a lump on her breast, but a change of doctor meant she was given an examination and the bump was examined.
Sarah has made a full recovery but said she couldn't believe the diagnosis because she was so young.
Dr Lesley Walker from Cancer UK said they were flooded with requests and it led to massive media coverage, which created the Kylie effect.
More people came forward for screening, and Dr Walker said it continued to be the case that even young women should have regular checks for the disease.