HBO releases trailer for upcoming "intensely emotional" documentary about Princess Diana

August will mark 25 years since Princess Diana tragically passed away following a high-speed pursuit by paparazzi in Paris.

And in honour of the anniversary, HBO has released the official trailer for its upcoming documentary exploring Diana's complex relationship with the media and her romance with Prince Charles.

The film, titled The Princess, has been described as "intensely emotional" as it will examine the overwhelming adoration and intense scrutiny she faced as a member of the royal family.

In a statement, HBO said: "The Princess is a visceral submersion into Diana's life in the constant and often intrusive glare of the media spotlight.

"The film unfolds as if it were in the present, allowing viewers to experience the overwhelming adoration, but also intense scrutiny of Diana’s every move and the constant judgement of her character.

"Through archival material, the film is also a reflection of society at the time, revealing the public's own preoccupations, fears, aspirations, and desires."

The documentary will also show how the paparazzi frenzy contributed to Diana's death.

"Princess Diana’s tragic death, caused in part by a high-speed pursuit by paparazzi, was a moment for reflection by both the public and the media machine it feeds. However, after nearly 25 years since Princess Diana's death, has anything really changed?" HBO said.

The beloved princess died at the age of 36 when the car she was travelling in crashed in a Paris tunnel on August 31, 1997.

The HBO original documentary will premiere on August 13.