It was recently revealed that Ozzy Osbourne, 67, had been having an affair with hair stylist, Michelle Pugh.
According to i, Pugh was fired from her job as a colorist at Meche Salon in Beverly Hills after the cheating rumors surfaced.
"Ozzy was supporting her," a source told the magazine.
Kelly Osbourne is defending her mother, Sharon, who uncovered the affair by going through her husband's emails.
“She and [daughter] Kelly both called the salon repeatedly for about two weeks before the news broke, trying to get in touch with Michelle.
"They were really angry," the source added.
"Sharon is the reason Michelle was let go.”
Last night, Kelly took to Twitter to issue a scathing call-to-action against Pugh.
"Anyone looking for cheap chunky LOW-lights a blow out and a blowjob call ________," listing a cell phone number that no doubt belongs to Pugh.
After she posted the tweet, Osbourne issue a warning to Pugh via Page Six.
“Don’t f–k with my family, don’t f–k with my momma, and don’t f–k with me," she told the gossip column.
In the May 30th issue of Us, a coworker told Entertainment Tonight that Pugh, who has worked with Jennifer Lopez and Pete Wentz, "is super into rock/metal music, so they bonded.
"It was known in the salon they were a little too close."
The family thought Ozzy went missing in April, but it turns out he just left the house without telling anyone so that he could hang out with Pugh.
Sharon, according to the story, "thought he had gone on a walk and had some kind of medical emergency."
She and Kelly, along with siblings Aimee and Jack, tried to find their dad.
Ozzy had left behind his cell phone, so the family scrolled through his history for any information pointing to his whereabouts. They noticed a strange number, which belong to Pugh.
"She's a Black Sabbath groupie who used to dye his [Ozzy's] hair," a friend of Pugh's said.
As of press time, Kelly's tweet is still up.