Grammy awarded singer-songwriter Adele has posted a photo on her Instagram to express her heartbreak on having to cancel the final two shows of '25'. Adele, who was set to perform infront of approximately 100,000 people at Wembley Stadium, posted a letter on instagram to explain her reasons and to say how sorry and devastated she is with the decision made, asking her fans to "please forgive her." She wrote: "The last two nights at Wembley have been the biggest and the best shows of my life."

Adele's vocal chords

The reason for the cancellation is that her vocal chords have been damaged.

"On medical advice I simply am unable to perform over the weekend. To say I'm heart broken would be a complete understatement" Adele stated.

Adele has explained she was already on steroid and other medical aids for her voice. It would seems that her massive '25' Tour has taken a toll on her, and her voice. The singer did consider trying to make it through a show but said that it was "highly unlikely" and that she couldn't crumble and walk out of her fans. She also wouldn't bring herself to lip-synch as she couldn't do that to her fans, stating: "It wouldn't be the real me out there".

Some fans were not pleased

After 121 performances around the world, including Australia, New Zealand, Europe and North America, Adele was set to finish the '25' Tour with the two shows at Wembley Stadium in London.

The final two shows were supposed to be held on the first and second of July with approximately 100,000 people in attendance.

While some of her fans were understanding, some fans weren't ready to forgive the singer just yet. Concert tickets do not come cheap, and some people were traveling to London just to watch her perform.

Fans were upset that they had already booked trips and hotels in London to attend the now-cancelled concert.

Adele acknowledged the impact of the cancellations and apologized to fans who had made travel plans prior to the show. She promised refunds for the tickets if she is unable to reschedule the shows.

Not the first time

This isn't the first time that Adele's vocal chords are damaged.

Back in 2011, Adele had to undergo a vocal chord surgery after she found out that she had a polyp on her vocal cord that had hemorrhaged, according to CBS News and her interview with Anderson Cooper back in 2012. Adele was then promoting her massive hit album, '21'. When she was diagnosed with vocal chord hemorrhage, she was forced to cancel 10 performances in her US Tour to undergo surgery and recover. Adele officially made her comeback at the Grammy Awards in 2012 with her performing 'Rolling in the Deep' which received a standing ovation.