Kelly Osbourne and Sharon Osbourne arrive at the Pre-Grammy Gala & Salute to Industry Icons on Feb. 12, 2011. (AP)

Can you imagine the Osbourne clan – mumbling Ozzy, loud Sharon and cynical Kelly – being on their best behavior for Britain’s prized royal wedding?

Neither can they.

"F--k no!" said Sharon Osbourne on whether she received a wedding invitation, according to E! Online. "I've got to work. Are you crazy?"

Don't count on Sharon's daughter Kelly Osbourne attending either. “I don't want to go," Kelly said. "I don't know them. Why would you go to someone's wedding you don't know? You'd be wedding crashers but like really five-star. Like, leave it out. I'm fine!"

It's a different sentiment than that shared earlier this week by fellow Brit Simon Cowell, who wondered if his invitation "got lost in the post."