Paris Hilton is set to reveal all about a traumatic childhood experience she has kept secret for decades in her documentary. In a newly-released "This is Paris", the hotel heiress and socialite reveals she has faked her happy persona her whole life because it helped her hide the torment she suffered as a child.

A difficult part of her past in a new sneak peek at her youtube originals documentary “This is Paris,” the heiress says she is still haunted by a painful childhood memory she kept under wraps until now. According to People magazine, the 39-year old suffered mental abuse while attending boarding school in Utah as a teenager and she discussed the situation on camera while shooting "The Paris". In the clip, Paris confesses that she hadn’t shared the troubling incident with anyone before and was so nervous. She was shaking and unable to eat and admitted the experience has lingering effects.

She says"I feel like the whole world thinks they know me. No one really knows who I am. I’m always putting on this facade just like the happy and perfect life,”

One of the things she talks about in This Is Paris is having trust issues in relationships, as she's seen setting up a spy-cam in her house and revealing a stockpile of laptops she has acquired because, seemingly every time she has a new boyfriend, he demands access to her computer, or helps himself to it anyway. There was also the time an ex lost his temper and smashed her laptop against the wall. Subsequently, she gets herself a new computer when she starts dating someone.

She's "been betrayed so many times, so she has a tough time trusting people and letting people in," younger sister Nicky Hilton Rothschild says in the film.

in her Documentary Paris opened up about the way she was treated by some of her previous boyfriends, alleging she had been physically, emotionally, and verbally abused by "five" men. She says "I've been in a lot of relationships where people get so controlling and get so angry that they become physical,"

she revealed, going on to address the shocking photos of her from 2004 in which she has bruises, a bloodied lip, and what appeared like swelling under her eye. "We just got in an argument," she recalled of the incident. "I was trying to leave his house and he just got really mad and was just grabbing me and pulling me. I don't really remember most of it because I've had worse stuff happen." She continued, "I've been strangled, phones thrown at me, computers, and I accepted it because I almost thought it was so normal. Like, he loves me so much that he's going this crazy. I just wanted so bad that I was willing to accept being hit or yelled at or screamed at or strangled…a lot of things."

The biggest revelation is Paris alleging she suffered abuse including strangulation, being locked in rooms, and screamed at while attending Provo Canyon School when she was a teenager.

Hilton says "I feel like a lot of the people who worked there got off on torturing children and seeing them naked," she said. "They would prescribe everyone all these pills. I didn't know what they were giving me. I would just feel so tired and numb."

Paris explained in the opening scene of the movie. “No one knows who I am. Something happened in my childhood that I’ve never talked about with anyone. I still have nightmares about it”.

she further says "I still have nightmares about it. I wish I could bring, like, a camera into my dreams, and, like, show you what it's like. It's terrifying. And I relive that every night. I experienced it and to this day I am still traumatized and I think the only way to have these nightmares stop is to do something about it."

After meeting with fellow survivors and her friends from her Provo days, Paris decided to finally reveal the extent of her experience at the school to her mother.

"They were constantly being abusive in every way," she shared with a shell-shocked Kathy, who later began to cry. "But I couldn't tell you guys because every time I tried I got punished by them or they would say, 'We're just going to tell your parents you're a liar and they're not going to believe you.' Basically, they just told me that so many different times that I was afraid to even say anything or bring it up."

Paris also addressed finally speaking out publicly, explaining why she waited. 

"I wanted to do something, but at the same time I didn't want to hurt my brand," she said. "I can't have this be part of my business, and people won't understand. But if I don't do this it's going to continue to happen and I'm going to continue being traumatized and think about it the rest of my life."

This is Paris is described as the real story of a teenage girl desperate to escape into a fantasy and a compelling portrait of an international icon as she uncovers the hidden past that’s made her who she is today. Shedding new light on the instafame culture Paris helped create the film.