Australian actress Cate Blanchett is planning her greatest acting role to date this Christmas - convincing her kids that Santa Claus really does exist. It's become a family tradition to make floury reindeer paw prints on the floor on Christmas Eve, so that her kids are convinced Santa really did pay them a visit. She says, "We do all that kind of feeding Santa Claus stuff and I put my reindeer socks on and sprinkle the flour and we make paw prints in the flour." Blanchett accepts it won't be long before her kids start quizzing her about the validity of Santa's annual visits. She adds, "You've only got a few years because it gets younger and younger before they say, 'You're lying to me.'"