Did the rock star's daughter really post Michelle Pugh's phone number?
Kelly Osbourne threw some major shade at her father Ozzy Osbourne's alleged mistress on Monday night.
Earlier this month, news broke that the rock star had been involved in an “emotional affair” with Michelle Pugh, a hairstylist at Meche Salon in Beverly Hills, California.
WATCH: Flashback! Sharon Osbourne on What She Would Do If Ozzy Cheated -- 'I'd Chop His Willy Off'
Kelly made it clear this week that not all is forgiven. "Anyone looking for cheap chunky LOW-lights a blow out and a blowjob call +1(323) 928-2323," Kelly tweeted.
A source tells ET that the digits do belong to Pugh, but as of Tuesday morning, the phone number had been disconnected.
WATCH: Ozzy Osbourne's Alleged Mistress Steps Out as He and Sharon Reunite for Press Conference
"Hate your father, not the woman. HE did this to your family ...Again. #SMDH #childish," one Twitter user responded to the 31-year-old TV personality's tweet.
Kelly wrote back, "Are you in my family? NO YOU ARE NOT. YOU HAVE NO IDEA WHAT SHE DID! So keep your high-mighty opinions to yourself!"
Another commenter asked: "Why would it only be one person's fault??? It takes two to tango, both guilty. She knew he was married."
Kelly reacted: "My father is almost 70. Ever heard of elder abuse?"
While a source close to the Osbournes told ET that the alleged affair has been "hard on the family," Sharon Osbourne -- who is her husband's manager -- was on hand to introduce the 67-year-old musician during a press conference in Hollywood, California, on May 12. Kelly was also in attendance.
However, Sharon told ET that that the estranged couple's appearance together was strictly professional. "It's business. This is my business, you know? This is what I do," the 63-year-old talk show co-host explained. "People have forgotten because they see me every day on the chat show, but this is still the other half of my life."