Multiple videos of Jennifer Lawrence engaged in sexual acts are set to be leaked online.

Jennifer, 24, is among 100 celebrities who have had photos, video and other personal files stolen from their Apple iCloud accounts by hackers.

Several pics of 'The Hunger Games' star in various sexual poses were posted on the 4chan image sharing forum and have been shared on various social media sites and other websites.

Naked images of Sports Illustrated model Kate Upton have also hit the web, while Rihanna, Kim Kardashian West, Winona Ryder, Selena Gomes and Lea Michele are among the stars listed as having had their iCloud accounts hacked.

An individual who claims to be the person responsible for releasing a collection of explicit photos of the Oscar-winning actress on the 4chan image sharing forum has made a post claiming they also have in their possession several videos of Jennifer engaged in erotic acts.

The person has stated they will post the videos in return for PayPal donations and they have already posted a PayPal email online which can be used to donate cash.

A statement has also been posted on 4chan by someone using the same username as the image leaker stating that they are not the original hacker who acquired the naked images of Jennifer and other celebrities but merely a "collector".

The post read: "I didn't take the money and run. Shit got weird once I started posting samples. AnoniB must have IP blocked me.. so i was spending all my time trying to find proxies, and then when I could get on this site was being hammered by everyone and I couldn't even post. I got some private requests through email but none every came through.

"People wanted s*** for free. Sure, I got $120 with my bitcoin address, but when you consider how much time was put into acquiring this stuff (i'm not the hacker, just a collector), and the money (i paid a lot via bitcoin as well to get certain sets when this stuff was being privately traded Friday/Saturday) I really didn't get close to what I was hoping.

"Mainly because of the extra bitcoin spammers spamming their own address.. taking my original posts and passing them off as their own to try and get bitcoin.. but also because of the skeptics. I proved I had s***, but people wanted more and more for free. Well, f**k, you can't get everything for free sometimes.

"Anyway, back to weird s*** happening when I posted samples.. someone was tracking me, trying to find me.. ISP kept cutting out. Weird emails coming in.. Kinda freaked me out and I had to leave for a couple hours. (sic)"

A spokesperson for Jennifer, 24, confirmed the authenticity of the photos and revealed 'The Hunger Games' star will be taking legal action against any website or media outlet that posts the images.

The spokesperson said: "This is a flagrant violation of privacy.

"The authorities have been contacted and will prosecute anyone who posts the stolen photos of Jennifer Lawrence."

Kate Upton will 'pursue anyone' who shares photos

Kate Upton's lawyer will "pursue anyone" who shares naked pictures of her.

Nude photographs of the 22-year-old model were reportedly leaked online after her mobile phone's online storage system iCloud was allegedly hacked, and now her legal team have threatened to take action.

Kate's lawyer, Lawrence Shire, told Us Magazine: "This is obviously an outrageous violation of our client Kate Upton's privacy. We intend to pursue anyone disseminating or duplicating these illegally obtained images to the fullest extent possible."

Stolen celebrity photos shouldn't be posted - Seth Rogen

Seth Rogen has urged people not to post the naked photos stolen from Jennifer Lawrence's phone.

The 'Knocked Up' star is disgusted by the leak of explicit images of the Oscar-winning actress and is adamant that what has happened to Jennifer should not be "tolerated".

Seth - who is married to Lauren Miller - posted on Twitter: "Posting pics hacked from someone's cell phone is really no different than selling stolen merchandise.

"I obviously am not comparing women to merchandise. Just legally speaking, it shouldn't be tolerated to repost stolen pics."