By Jasmine Allday Sharon Osbourne slammed Simon Cowell in a fiery rant on Celebrity Big Brother tonight. The X Factor judge worked alongside Louis Walsh and Simon for several years but in a furious rant tonight, she blamed him for ruining her career and explained how it all ended with the music mogul and why they don’t talk anymore. Speaking on the show tonight, Sharon told Louis that she had missed out on doing The Masked Singer in the US because she had committed to a new series of The X Factor with Simon, which never went ahead. Sharing what happened, she told Louis: “I missed a huge gig. T…