AMERICA'S Got Talk star Nightbirde revealed she weighs just 85 pounds in her devastating cancer battle.

The singer, whose real name is Jane Marczewski,  shared a new photo to update fans, standing with an IV pole.

America's Got Talk star Nightbirde revealed she weighs just 85 pounds in her devastating cancer battleCredit: Instagram/Nightbirde

Nightbirde shocked fans when announced her exit from the show's finals on InstagramCredit: Getty

Nightbirde posted a new pic in cream overalls and a maroon tank top.

She smiled, holding on to an IV pole, and captured the snap: "Ever seen 85 pounds look so good????"

The singer took to Instagram in September to share her grief following the show's finale, which she was predicted to be in but ultimately could not participate.

She posted a video of a bunch of balloons floating away in the sky over the ocean.

The 30-year-old was heard talking to someone in the background saying: "How many more wishes do we get?

"Is this like compounding the wishes we already made, or are these individual wishes?"

The former contestant reflected on her experience on the talent series in the caption writing: "It's so hard for me to not be on the @agt stage for the finals this week.

"I bet you never saw someone win so hard and lose so hard at the same time. This isn't how the story was supposed to go."

Simon Cowell recently told People of Nightbirde's health: "Unfortunately, she is really ill and could not make the finals.

"However, it was always her dream for her music to be heard by millions. That's what's happened off the back of this.

"We talk about once every two weeks. It was a difficult conversation we had about does she enter the show or not. I know that she was very down.

"I called her and I said that, 'Honestly if I was in your position, I wouldn't do it.' Because you don't need the stress right now.

"You can always re-enter the show or you don't have to because, at this point, when you put your music out, I think a lot of people are going to buy it. So why put yourself through it.

"You're not letting anyone down because that's what she kept saying to me. You're not, you're going to be missed but you're not letting anyone down."

Last month, Nightbirde shared pics from a wine cruise outing.

In the caption, the America's Got Talent contestant admitted she had been "feeling super sick."

However, when she heard about the "wine cruise," the NBC star went out to have some fun and managed not to "throw up into the harbor.

In her Instagram Story, Nightbirde had a huge smile on her face as she hugged her pal. 

She captioned the photo: "Laughed so hard, my cancer shrunk."

Recently, the songwriter had raised over $500K for her cancer treatment on GoFundMe.

Nightbirde wrote on the crowdfunding page: "This spring, I experienced a true miracle. Hundreds of tumors died in my body, after being given 3-6 months to live. It was a whirlwind of a year, and my friends, family, and fans gave tens of thousands of dollars for a treatment that saved my life."

She added: "We are confident that the same cancer treatments as before will yield the same amazing results, and I'm calling on you for some help once again, as they're not covered by my insurance.

Nightbirde shocked fans when announced her exit from the show's finals on Instagram.

She explained: "Sharing my heart with the world on AGT has been an honor and a dream come true. My point of view this summer has been astounding.

"What a miracle that the pain I've walked through can be reworked into beauty that makes people all over the world open their eyes wider."

The entertainer continued: "Since my audition, my health has taken a turn for the worse and the fight with cancer is demanding all of my energy and attention.

"I am so sad to announce that I won't be able to continue forward on this season of AGT.

The singer/songwriter made a surprise return to the competition show after dropping out due to her deteriorating health. 

America's Got Talent judge Simon Cowell, 61, broke down in tears and then told her: "Even though you haven't competed, you've already won. As Terry [Crews] said, your clip has had such an impact on so many people and your courage and who you are.

"The most important thing is your well-being and your health and your recovery. And on behalf of all of us here, we're sending you our love, our prayers, and we can't wait to see you again soon."

He concluded: "And thank you so much for auditioning on the show, and for singing such a beautiful song."

The entertainer became an overnight sensation after her incredible audition with a video of her performance racking up a staggering 30 million views on YouTube.