Britney Spears has stated that she is working on a book, confirming rumours in the US media that the pop queen was planning a new tell-all biography.

Spears announced the news in an Instagram statement on Monday night.

The biography, according to the singer, will address terrible moments in her life that she has “never been able to convey honestly.”

A court dissolved a formal guardianship that had ruled over many parts of her life for almost a decade in November.

When Spears had a mental health crisis in 2008, her father, Jamie Spears, placed her under conservatorship.

He had complete control over her income and professional decisions, as well as crucial personal considerations like her visits to her teenage boys and whether she might remarry, thanks to the contentious arrangement.

While the actress has been tight-lipped about a possible release date or publisher, Page Six reported in February that she had signed a $15 million ($11.4 million) agreement with Simon & Schuster to chronicle her life, career, and relationship with her family during and after her conservatorship.

Spears claimed that writing the book was “healing and therapeutic,” however she admitted that revisiting earlier incidents in her life had been challenging.

The 40-year-old noted that she approached the memoir with a “intellectual approach.”

However, the actress took aim at her mother and sister, accusing them of “indulging themselves by writing their own novels when I couldn’t even grab a cup of coffee or drive my car.”

Since her appearance on Good Morning America to promote her book, Things I Should Have Said, Spears has been embroiled in a public feud with her sister, Jamie Lynn.

Her personal life story is detailed in the book, including her young daughter’s near-fatal car accident in 2017, her friendship with Britney Spears, and her participation in the singer’s contentious conservatorship.