Lily Allen is set to release a ''shocking and brutal'' autobiography

The 'Smile' hitmaker is putting pen to paper to write a book which will tell her life story detailing events from her childhood, her romantic liaisons, motherhood and the ''highs and lows of fame'', including her battles with eating disorders and drug and alcohol abuse.

Lily - whose parents, actor Keith Allen and film producer Alison Owen, divorced when she was just four - is also expected to detail the most painful moment of her life when she tragically delivered her son stillborn six months into her pregnancy in 2010 after contracting a viral infection. After the birth, the musician was admitted to hospital and treated for septicaemia.

In a statement, Lily wrote: ''Some of it I think might be uncomfortable and shocking and brutal. There will be good stuff in there too; happy times. I will try and make it funny. I know it's about me but I hope that a lot of it will ring true with anyone who reads it. It won't be written with shame. It will be true.''

Last year, Lily was inspired to take on the written word after reading American writer-and-director Nora Ephron's collection of self-help essays 'I Feel Bad About My Neck: And Other Thoughts on Being a Woman'.

Released in 2006, the tome sees the 'When Harry Met Sally' screenwriter share nuggets of wisdom she has accumulated throughout her life, such as ''never marry a man you wouldn't want to be divorced from'' and ''when your children are teenagers, it's important to have a dog so that someone in the house is happy to see you''.

Lily has two daughters, Ethel, five, and four-year-old Marnie, with her estranged husband Sam Cooper.

The 'Not Fair' singer has never spoken about her split from Sam in 2015 but insiders claim a leaked track, 'Family Man', deals with the break-up and is a taste of things to come from her upcoming fourth studio album.