She's told dirty jokes to the Prince of Wales and has some serious words of advice to new American Idol judge Nicki Minaj but Sharon Osbourne mostly regrets walking out on Britain's The X Factor "because of the money".
For a celebrity who has largely made her career on television, Osbourne was in Sydney on Friday speaking at Commercial Radio Australia's National Radio Conference.
In an interview session with Network Ten's Angela Bishop, the wife of Black Sabbath's Ozzy Osbourne said she left The X Factor after learning her boss Simon Cowell had become involved with new judge Dannii Minogue.
"I'm fiercely loyal to Simon's ex - still one of my good friends Terri Seymour - Dannii comes in and I'm like 'Right, don't you be messing with him!' ... None of my business but I got involved with it."
Osbourne says it was a mistake to go as she "ended up losing a fortune".
However, she was quick to dispel rumours printed in a British tabloid that she and Minogue are headed for a reconciliation as part of the show's 10th season.
"I have not been asked by our fearless leader, Simon Cowell," she told Bishop - pointing out that it is the first time in nearly 10 years that Cowell isn't employing her.
Osbourne also opened up about her son Jack's diagnosis with Multiple Sclerosis and his recent marriage in Hawaii, where she also celebrated her 60th birthday before flying into Sydney to speak at the conference and host its awards night on Saturday.
But the audience were clearly more interested in her views on other celebrities. There were roars of laughter when Osbourne described "feeling Camilla's big old titties" (when she was drunk at a party with Prince Charles and the Duchess of Cornwall) and when she described the smelliest celebrity she's ever met - Bob Geldof, that despite being a "lovely bloke" had armpits that reminded her of "a very old vagina".
Osbourne also told the audience of radio insiders she thought Minaj had gone too far after a reported spat with fellow American Idol judge Mariah Carey during auditions for the show. The pair, along with Australia's Keith Urban and Randy Jackson, form the newly minted panel on the US TV talent show.
"She should realise that the majority of her audience are little girls and I think that there's enough of young women on TV fighting and pulling each other's hair and being foul to each other and she should set an example."