Opening up about her personal struggles with infertility, Jessie J took to the stage at the Royal Albert Hall and told the crowd: “So four years ago, I was told that I couldn't have children.”

The brave moment took place right before she performed her song ‘Four Letter Word’, which is about her experience of finding out about her infertility, in front of the crowd and Channing Tatum.

“It's OK, I'm going to have children, trust me. When the doctor told me, my reaction was, 'Oh hell nooooooo,'" she added, singing the last part.

"And I don't tell you guys for sympathy, I'm one of millions of women, and of men, that have gone through this and will go through this, and it can't become something that defines us," she continued.

"But, I wanted to write this song for myself in my moment of pain and of sadness. But, also to give myself joy and give other people something that they can listen to in that moment when it gets really hard."

The winner of China’s biggest talent show contest went on to add: “So, if you've ever experienced anything with this or have seen somebody else go through it, or have lost a child, then please know you are not alone in your pain.”

The track she then sang is pretty emotional, with the lyrics saying: "I pray I get the chance to bloom/I can be a six letter word, but four letter word is you, B-A-B-Y/This just changed my life/Can't believe I, can't believe I, can't believe I don't have time."

After watching Jessie be so open on stage, Channing then took to Instagram to let the world know how special she is.

"This woman just poured her heart out on stage at the Royal Albert Hall," he captioned a photo of Jessie on stage. "Whoever was there got to witness something special. Wow."

It’s a truly beautiful moment.