It's no secret that Whitney Houston led an eventful life before her untimely death at the age of 48 in 2012.

There were plenty of ups - most notably her huge success as she became a global superstar - and plenty of downs, too, in terms of her problems with drugs and her tumultuous relationship with Bobby Brown.

Now, her story is to be told in a new documentary that has been approved by her estate, which promises to offer an 'unvarnished and authentic' account of her life.

It'll be directed by Oscar-winner Kevin Macdonald, who directed documentaries including 'Touching the Void', 'One Day in September' and 'Marley', as well as feature film 'The Last King of Scotland'.

The documentary will include interviews with friends, family and associates of Houston's, as well as featuring never-before-seen footage of the singer.

Macdonald said: "The story that is never told about Whitney is just how brilliant she was as an artist; by many measures, she had the greatest voice of the last 50 years. She changed the way pop music was sung — bringing it back full circle to its blues and gospel roots. She was also completely unique in being a black pop star who sold in countries where black artists don't traditionally sell."

His is not the only Whitney Houston documentary in the works, however; filmmaker Nick Broomfield, the man behind 'Kurt and Courtney' and 'Biggie and Tupac', is making one for BBC2, although it doesn't have her family's approval.

H/T: Rolling Stone