In it, Hilton addresses her sex tape One Night In Paris that was filmed with then boyfriend Rick Salomon and leaked in 2004.

She said her sex tape ruined her dreams of becoming like Princess Diana.

"When I heard about it I thought: 'Yeah right. It's going to be a look-a-like. It's going to be a joke,’ Hilton says in the documentary.

"But a couple of hours later it was all over online and then I saw it. It's the most intimate thing you can do and the whole f***ing world is watching it and laughing at you.

"That's not what I wanted when I was a little girl. It's not what I planned. I always looked up to people like Princess Diana and now I can never be like that."

Hilton said her public persona was nothing like how she was behind closed doors.

"People see me as a Barbie with a perfect life, a fantasy ... maybe that's what they like.

"There's a mystery about me because how I am in public is completely different to how I am in private."