Around 55,000 people are diagnosed with breast cancer every year in the UK. That's one person every 10 minutes. The good news, however, is that survival rates have increased dramatically - largely due to heightened awareness and improved treatments.
Recent years have also seen many high-profile celebrities go public with their breast cancer experiences. In February, Angelina Jolie revealed she'd had a preventative double mastectomy due to an inherited gene that meant she had an 87 per cent chance of developing the disease. Since then, cancer charities have reported a four-fold increase in enquiries from women considering undergoing the same treatment.
Read on to find out how other stars have coped with the disease itself, plus what they've learned from their experiences...
Absolutely Fabulous star Jennifer, 55, was diagnosed with breast cancer in October 2009. Having undergone a lumpectomy, radiotherapy and chemotherapy, she went public about her illness the following summer. Jennifer has also spoken openly about how the treatment brought on the menopause and depression. Now fit and well again, she's taking the drug Tamoxifen to reduce the chances of her cancer returning.
Jennifer says: 'You just grit your teeth and bear it. It becomes your job and your job is now getting through this next year of whatever.'
'Coronation Street' stalwart Sally, 50, discovered she had breast cancer in November 2009 - after her soap character's battle with the disease inspired her to check for abnormalities. The actress spent six months away from the cobbles while she underwent radiotherapy and chemotherapy - but made a full recovery before her return to work in July 2010.
Sally says: 'If I hadn't been researching this storyline, I may not have discovered the lump and had it looked at so quickly. I'd never properly checked my breasts before as I thought this wasn't going to happen to me.'
Aussie superstar Kylie, 45, was diagnosed with breast cancer during her Showgirl world tour in 2005. Following radiotherapy and chemotherapy, she took a few months out to recover - but doctors gave her the go-ahead to resume the tour in November 2006. Last year saw her celebrate 25 years in showbiz. Most recently, she was unveiled as the new coach on BBC One's The Voice.
Kylie says: 'A day does not go by without me thinking about it. Just looking in a mirror is enough – the scars are moral and physical. There are days when I feel an incredible anger, others when I say that I was very lucky in my misfortune.'
US TV presenter Giuliana, 39, learnt she had early-stage breast cancer in October 2011 following a routine mammogram during her third cycle of IVF treatment. She underwent a lumpectomy and radiotherapy, then opted for a double mastectomy. Giulana has since made a full recovery and is proud mum to son Edward, born to a surrogate in August 2012.
Giuliana says: 'I'll be able to say that I survived something major and it's made me stronger. I will be a better woman for it.'
TV presenter Trisha, 55, found out she had breast cancer following a routine mammogram in 2008. She underwent surgery and several months of radiotherapy and chemotherapy - but managed to continue working and go for daily runs throughout her treatment. Since given the all-clear, she still presents her TV talk show for UK and US audiences.
Trisha says: 'Cancer has definitely changed me... I used to live everywhere but in the here and now. I live in the now these days, I really do.'
You might also like...
'Sex and the City' star Cynthia, 47, was diagnosed with breast cancer in 2006, after routine screening identified a small tumour in her right breast. Following an operation to remove the lump, she underwent six weeks of radiotherapy - and soon made a full recovery, although she still takes Tamoxifen to prevent a relapse. The actress didn't go public with her illness until 2008, when she became an ambassador for a US cancer charity.
Cynthia says: 'I've learned that if you catch breast cancer early, the chances are overwhelmingly good that you'll be cured. So my attitude was... this wasn't a big deal.'
Having already survived colon cancer in 1997, Sam, 46, was diagnosed with breast cancer in 2006 after finding a small lump in her left breast. The filmmaker underwent a lumpectomy, followed by six months of chemotherapy. Now cancer-free for more than 13 years, she was recently chosen to direct the film adaptation of Fifty Shades of Grey.
Sam says: 'Of course there's fear, but the thing that kept me going was that I felt there was no option of failing it, because I had my eldest daughter, and every time I looked at her, it just hardened my determination to see it off.'
US singer Anastacia, 45, recently announced she'd beaten breast cancer for the second time. She was originally diagnosed in 2003 after a mammogram picked up the disease in its early stages. A partial mastectomy and six weeks of radiotherapy followed. In February of this year, the star was forced to cancel her world tour after learning she was suffering from a more aggressive form of the disease. But in July, she announced via Twitter that she's now 'cancer-free forever'.
Anastacia says: 'I now know that beauty isn't about having perfectly round breasts or a flawless complexion. It's about who I am on the inside, and I have cancer to thank for that insight.'
Singer Sheryl, 51, discovered she had early-stage breast cancer in 2006 - just three weeks after she'd split from long-term partner Lance Armstrong, also a cancer survivor. Sheryl underwent a small operation, followed by radiotherapy as a precaution, and has been in remission ever since.
Sheryl says: 'I kept my breast cancer tattoos - where the radiation was lined up on my chest. Once in a while, I look at it to remind myself that I have to put on my oxygen mask first before I put it on anybody else.'
You might also like...
Just a few hours after learning she had breast cancer in 2003, US actress Edie, 50, showed up for work on the set of 'The Sopranos'. The star had a biopsy after finding a small lump in her breast. She underwent chemotherapy and made a full recovery, but chose not to public with her illness until a year later.
Edie says: 'It was a terribly frightening and surreal time, but I never missed a day of work, even on the worst chemo days. You have no idea at the time that there is a future.'
Late last year, US actress Kathy, 65, revealed she'd undergone a double mastectomy after being diagnosed with breast cancer. The star - who'd survived ovarian cancer nine years earlier - was told she didn't need radiotherapy or chemotherapy. Having bounced back from her surgery, she's now starring in US TV series American Horror Story.
Kathy says: 'I always land on my feet and thankfully, this is no exception. My doctors have assured me I'm going to be around for a long time.'
US actress Christina, 41, discovered she had early-stage breast cancer in 2008, following an MRI scan. She later had a double mastectomy after learning she'd tested positive for the BRCA1 gene mutation, which increases chances of relapse. She's since made a full recovery, and recently married her long-term partner Martyn LeNoble.
Christina says: 'I feel like I have a responsibility to all the women out there, to not let them live in fear. Fear perpetuates disease.'
You might also like...