The 63-year-old actress received a “long and important” letter from the now 39-year-old singer shortly after she suffered a public breakdown and shaved her head.
Appearing on The Kelly Clarkson Show, Stone said: “Britney wrote to me a very long and important, poignant letter during a very difficult time in her life, about the time when people would recognise her for when she shaved her head, wanting me to help her.
“And I was in a very difficult time of my life, and I couldn’t help myself. But the truth of the matter is, we both needed help. She needed help, and I needed help.”
Following her public breakdown, Britney was placed under conservatorship with her father initially having complete control over her assets until he temporarily relinquished power in 2019 due to health issues.
Sharon believes the ‘Toxic’ hitmaker has reached “breaking point” after being controlled by her conservator for so many years.
She said: “The true fact of it is, it’s very hard to be a very successful woman and not have everyone controlling you, taking your finances and handling you. I’m sure all of the young stars get handled. There is a huge breaking point, and there’s a point where you get broken.
“The thing with Britney Spears is so out of control and so awful. And certainly, I can say it’s been very out of control and very awful more than once in my life, and I have certainly had it. And it’s very complicated to take control of your life. It’s very hard to get control of your finances.”
It comes after Britney recently broke her silence after the release of the ‘Framing Britney Spears’ documentary saying she “cried for two weeks”.