He may have played cads in such recent films as "Closer" and "Alfie," but Jude Law is tying the knot in real life, according to Zap2it.com. Law, 32, and "Alfie" co-star Sienna Miller, 23, got engaged on Christmas Day. A wedding date has not been set. Law was previously married to actress and fashion designer Sadie Frost, with whom he has three children. They divorced in October 2003.