Britney Spears said she “cried for two weeks” after watching the recently-released documentary that explored her meteoric rise to the summit of pop music and subsequent fall.
Speaking about Finding Britney Spears, which premiered in February, for the first time, the singer said her "life has always been very speculated".
In an Instagram post that accompanied her dancing to the Aerosmith song Crazy, Ms Spears, 39, said she had not watched the documentary but that she had been “embarrassed by the light they put me in” in what she had seen of it.
Framing Britney Spears looked at the singer's mental health struggles from the mid-2000s, her treatment at the hands of the tabloid media and the conservatorship that has overseen her finances and personal affairs since 2008.
Ms Spear said she had "cried for two weeks,” over the documentary adding, “and well …. I still cry sometimes !!!!”.
She tagged Aerosmith singer Steven Tyler. Spears said: “My life has always been very speculated … watched … and judged really my whole life !!! For my sanity I need to dance to @iamstevent every night of my life to feel wild and human and alive!!!
“I have been exposed my whole life performing in front of people !!! It takes a lot of strength to TRUST the universe with your real vulnerability cause I’ve always been so judged… insulted… and embarrassed by the media… and I still am till this day !!!!"
Ms Spears added: “As the world keeps on turning and life goes on we still remain so fragile and sensitive as people !!!”
After touching on the documentary, she said: “I do what I can in my own spirituality with myself to try and keep my own joy … love … and happiness !!!! Every day dancing brings me joy !!! I’m not here to be perfect … perfect is boring … I’m here to pass on kindness.”
Ms Spears is currently locked in a legal battle with her father Jamie over her conservatorship.
He used to oversee both her personal and financial affairs before stepping down from his role over the former due to ill health.
In November last year, the singer had asked a court in Los Angeles to prevent her father from returning to his conservator role - which has given him broad control over her life and career for 12 years.
But the judge declined to suspend James Spears from arrangement, despite his daughter telling lawyers she is "afraid of her father".
The singer entered into the agreement in 2008 after suffering serious mental struggles and public meltdown.
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