The rock matriarch has been embroiled in an ongoing war of words with the Paparazzi hitmaker ever since Osbourne's daughter Kelly claimed Gaga's devoted fans had bullied her.
Gaga then criticised Kelly for her role on catty Tv series Fashion Police and Sharon stepped in, calling Gaga a "hypocrite and an attention seeker" in an open letter.
However, Ozzy Osbourne's wife is refusing to step down - she blasted Gaga on her Tv panel show The Talk on Monday (14Jan13), accusing the superstar of setting a bad example for her millions of fans.
She raged, "Don't let your fans be so hideously damaging, hurtful, violent... on your website. If you are a Mother Monster, monitor it. Why haven't you, as a responsible young woman, said, 'No violence on my website, no violence, no threats, no violence'?"
Sharon also took Gaga to task for the controversial rifle bra she has been wearing at her concerts, ranting, "Everything is guns, guns, guns. This is not right, and she should be stopped."
She then added, "All I'm asking her to do is to stay true to her (anti-bullying) foundation, which she said (she created because) she wants the world to be a braver, kinder world. (She should tell fans), 'Please don't be violent on my site.'"
Meanwhile, Kelly has attempted to call a truce, telling People.com, "I made stupid mistakes when I was 25, as well, when I accused people of doing things that were wrong. We all live and we learn. I'm a big fan of hers. All I have to say on this subject is that I love Lady Gaga! (But) I have no control over my mother. She can do whatever she wants."