Watch: Britney Spears wants to tell Oprah "all the bad things" her family did to her
The 39-year-old singer – who was officially freed from the legal control of her family last week — has publicly blamed her mother, Lynne Spears, for being partly responsible for the legal arrangement that controlled her finances and living arrangements, along with her father Jamie Spears.
Britney told her 36.4 million Instagram followers: "I might as well do a hint of my thoughts on the gram before I go and set things square on @Oprah."
She went on: "It still blows my mind every day I wake up how my family and the conservatorship were able to do what they did to me it was demoralising and degrading!!!!
"I’m not even mentioning all the bad things they did to me which they should all be in jail for … yes including my church going mother!!!!
"I’m used to keeping peace for the family and keeping my mouth shut … but not this time."
The Born To Make You Happy singer updated her fans on how much she is enjoying her newfound freedom - including being able to handle cash for the first time and drive her own car.
She said: "I've been on the conservatorship for 13 years. That’s a really long time to be in a situation you don’t wanna be in.
"I’m just grateful honestly for each day and being able to have the keys to my car and being able to be independent and feel like a woman.
"Owning an ATM card, seeing cash for the first time, being able to buy candles. It's the little things for us women, but it makes a huge difference. It's nice."
In another dig at her family she added: "But I'm not here to be a victim. I lived with victims my whole life as a child, that's why I got out of my house.
"I worked for 20 years and worked my a** off. I'm here to be an advocate for people with real disabilities an real illnesses.
"I'm a very strong woman so I can only imagine what the system has done to those people. Hopefully my story will make an impact and make some changes in the corrupt system."
And the Overprotected singer also credited the #FreeBritney movement with saying her life.
She said: "The #FreeBritney movement - you guys rock. My voice was muted and threatened for so long and because of your awareness. I honestly think you guys saved my life."
Britney's father Jamie has been in charge of his daughter’s estate since 2008. He also oversaw the Slave 4 U singer’s personal affairs, but left that role in 2019.
The conservatorship was put in place to protect the singer due to her ill mental health.
This led to the Free Britney movement: a legion of fans who believe the singer is being kept in unfair conditions under the conservatorship.
Spears – who entered the spotlight at the age of 11 on Disney’s The Mickey Mouse Club – suffered from the pressures of fame and work and had a very public breakdown in 2007.
After being put into her father’s care she went on to revive her career, appearing as a judge on the US version of The X Factor, performing several hit world tours and starring in a successful Las Vegas residency.
Her family have argued she was placed under the conservatorship for her own protection as she was mentally ill and "vulnerable" to being manipulated for her fortune.
However, she pulled out of a second Las Vegas run due to stress and has not performed since October 2018.
Watch: Britney Spears is delighted to finally be 'free'