FILE--Conjoined twins Tatiana (left) and Krista Hogan at Women's Hospital in Vancouver, Friday November 10, 2006. Krista and Tatiana Hogan have been a curiosity since the day they came into the world joined at the head, drawing sneers from people who say they should never have been born. Now, the conjoined twin girls, who are a medical marvel because their brain stems are fused at the top unlike any other twins, are set to celebrate their second birthday in their hometown of Vernon, B.C. THE CANADIAN PRESS/Camille Bains