By Beth Hardie The face Sharon Osbourne has today in the Celebrity Big Brother house is not the one she once owned – as a throwback picture proves. Sharon Osbourne has made absolutely no secret about the amount of plastic surgery she has had over the years. Although to be fair, it would be impossible to deny it thanks to the pictorial evidence. The former X Factor judge, who is currently starring as a ‘lodger’ in the Celebrity Big Brother house has previously said: “I love cosmetic surgery. If you’re not happy with the way you look and you have the money, change it! What’s the big deal?” And t…