This post deals with abuse and might be triggering for some readers.
For more than two decades, we've seen Paris Hilton's life play out in front of cameras, but there's been one thing she has kept private the whole time.
As a teenager, she was allegedly mentally and physically abused at a boarding school.
Hilton, 40, has been in the public eye for much of her life; first as a socialite then a TV star, model, singer, actress and DJ. But mostly, Hilton is known for being one of the first celebrities to become 'famous for being famous'.
Last year, Hilton let viewers inside her life as part of a YouTube documentary This Is Paris.
WATCH: The 'This Is Paris' trailer. Post continues below video.
In the documentary, which was released in September, Hilton explained that she felt like "the whole world thinks they know me," but often she doesn't even feel like she knows herself.
She also spoke about her childhood trauma for the first time publicly.
"Something happened in my childhood that I've never talked about with anyone," she said.