Joan Rivers has hit out at Lady Gaga after the singer blasted Kelly Osbourne.
The TV personality has responded to Gaga's claims that E! show 'Fashion Police' - in which she and Kelly Osbourne co-star - ''breeds negativity'' and says the 'Born This Way' singer is merely trying to get attention.
She told the New York Post's Page Six: ''Anyone that would wear a pastrami dress or sit in an egg should know about humour.
''She knows exactly what's she's doing. She's not selling. We haven't been talking about her until now.
''It's time to start laughing. We've been doing this for fifty years. Tell Lady Gaga to worry about the maggots in her brain from the meat dress! But I told Kelly that it's all good because it means Lady Gaga watches 'Fashion Police'!''
The drama stems from Kelly's comments last October when she said, ''Lady Gaga's fans are the worst'' and accused them of encouraging her to commit suicide, she also claimed the pop superstar had a duty to step in and stop their comments.
In response, Gaga penned a lengthy open letter on her fan-based social networking site, LittleMonsters.com, addressed to the 'Fashion Police' star, noting that while she felt empathetic towards Kelly and discourages her fans ''from any negativity and violence'', she feels the E! show - - promotes bullying.