Britney Spears: Singer confirms she is writing new memoir

Britney Spears has confirmed that she is in the process of writing a book, confirming recent reports in US media that the star intended to pen a new tell-all memoir.

Spears shared the news in a message posted on Instagram on Monday night.

The singer said the memoir will tackle painful events in her life that she has "never been able to express openly".

In November, a judge ended a legal guardianship that controlled many aspects of her life for over a decade.

Spears was put into a conservatorship managed by her father, Jamie Spears, in 2008, when the star faced a mental health crisis.

While the star didn't reveal any details about a potential release date or publisher, in February Page Six reported that she had reached a $15m ($11.4m) deal with the publishing house Simon & Schuster to chronicle her life, career and relationship with her family during and after her conservatorship.

Spears wrote that the process of writing the book has been "healing and therapeutic," though she added that it had been difficult bringing up past events in her life.

The 40-year old added that she has taken an "intellectual approach" to writing the memoir.

However the star also hit out at her mother and sister, who she accused of taking an "indulgence by writing their own books as I couldn't even get a cup of coffee of drive my car".

The book details her own life story, including her young daughter's near-fatal accident in 2017, her relationship with Britney and the role she played in the singer's controversial conservatorship.