Sisters Michelle and Lavinia Osbourne are twins with different fathers — something so rare that it’s never been documented before in British history and only 20 times in the entire world. “I’m still in amazement that this can actually happen – it’s super weird, super odd, super rare – but, if I apply it to myself, it makes sense,” Michelle, 49, told The Guardian. The women — born to a 19-year-old who drifted in and out of their lives — had a difficult childhood in which they clung to one another. Michelle and Olivia had a ball celebrating their 30th birthday in Marrakech, Morocco in 2006. Courtesy of Lavinia Osbourne “There’s twin magic. It does exist — it’s a thing,” Michelle said. “I can feel when she’s upset, and she can feel when I’m upset.” They have even felt each other’s physical pain. “There was a time when she spilled hot water on her leg, and I felt it,” Lavinia remembered.…