United Kingdom, Feb. 26 -- Sugababes star Mutya Buena is reportedly writing a tell-all memoir.

The 39-year-old singer is believed to be putting pen to paper to lift the lid on her rise to fame and her time in the pop group in a book called 'Real Girl' - which is named after her 2007 solo album and single of the same name - with a new report suggesting the tome will be released later this year.

A source told The Sun newspaper: "Mutya has been in the spotlight practically her whole life and it's not been an easy ride ...

"Lots has been written and said about her in the past but she is turning 40 this year and she felt like it was the perfect time to reflect on her life and set the record straight."

The insider went on to explain Mutya h...