McCarthy, 41, has informed the FBI about it and has also contacted all the websites to remove the pictures, reported E! Online.
"Certain photos claiming to be hacked photos of Jenny McCarthy and posted to various websites are not McCarthy at all, but someone else, including the most explicit nude photos. A small number of photos are of McCarthy that were stolen from her hacked phone account," her representative said in a statement.
She is the latest major celebrity to have photographs stolen from her phone and splashed online, after actresses and models like Jennifer Lawrence, Kim Kardashian, Hilary Duff, among others.