Jude Law’s enormous bottom was the talk of the Cannes Crosiette last weekend. Following the premiere of Firebrand, Karim Aïnouz’s new costume drama in which Law plays Henry VIII opposite Alicia Vikander as the Tudor monarch’s sixth and last wife Katherine Parr, critics expressed their astonishment at the voluminous size of Law’s rump. It’s 90 years since Charles Laughton picked …