Mischa Barton is ''finally standing up for herself'' after an alleged sex tape was being offered for sale.

The 31-year-old actress admitted her ''absolute worst fear was realised'' when she found out someone was trying to sell videos of her, which were filmed during ''her most intimate and private moments''.

Speaking at a press conference on Wednesday (15.03.17), she said: ''I just want to say that I have been put through an incredibly hard and trying time. This is a painful situation and my absolute fear was realised when I learned that someone I thought I loved and trusted was filming my most intimate and private moments without my consent, with hidden cameras. And then I learned something even worse - that someone is trying to sell these videos and make them public.

''I want to protect [other women] from the pain and humiliation that I have had to go through. No woman should have to go through this, and I am beyond grateful to Lisa Bloom, the Bloom firm and to all my friends that have helped me through this horrific experience. It is a very hard thing to do, but I am glad that I am finally standing up for myself.''

It comes after her lawyer Lisa Bloom issued a statement on social media, where she branded the alleged tape ''revenge pornography''.

She wrote: ''I am very proud to represent actress Mischa Barton, who is courageously standing up for her rights. It has been reported that naked or sexually explicit images of Ms. Barton are being 'shopped around.' Ms. Barton does not consent to any disclosure of any such images. She believes that she was recorded without her consent by someone she was seeing at the time.

''There's a name for this disgusting conduct: revenge pornography. Revenge pornography is a form of sexual assault, and it is also a crime and a civil wrong in California. And we will not stand for it. I have a message for anyone who attempts to traffic in these photos or videos of Ms. Barton: we will find you, and we will come after you. We will fully prosecute you under every available criminal and civil law. You proceed at your peril.''