Lady Gaga has cancelled the European leg of her Joanne World Tour due to severe physical pain.
The singer was due to perform at the O2 Arena across two nights on October 9 and 11.
It was part of a five-date UK tour which also included shows in Birmingham and Manchester.
Gaga announced the news to her 70 million Twitter followers in a heartfelt statement saying: "I have always been honest about my physical and mental health struggles.
"Searching for years to get to the bottom of them. It is complicated and difficult to explain, and we are trying to figure it out.
"As I get stronger and when I feel ready, I will tell my story in more depth, and plan to take this on strongly so I can not only raise awareness, but expand research for others who suffer as I do, so I can help make a difference."
She added: "I use the word 'suffer' not for pity, or attention, and have been disappointed to see people online suggest that I'm being dramatic, making this up, or playing the victim to get out of touring. If you knew me, you would know this couldn't be further from the truth.
"I'm a fighter. I use the word suffer not only because trauma and chronic pain have changed my life, but because they are keeping me from living a normal life. They are also keeping me from what I love the most in the world: performing for my fans.
"I am looking forward to touring again soon, but I have to be with my doctors right now so I can be strong and perform for you all for the next 60 years or more. I love you so much."
The six-week European leg of the Joanne World Tour was due to kick off in Barcelona on September 21, whilst earlier this month saw her cancel Rock in Rio Brazil show due to illness.
Meanwhile her Netflix documentary Gaga: Five Foot Two is due for release this Friday (September 22) which gives an unfiltered, behind-the-scenes access to her life.
The film will also delve more into her struggle with chronic pain caused by medical condition fibromyalgia.