In general, attire is one of the first factors that I consider when accepting an invitation to any event... from a backyard barbecue or black party to a blacktieaffair.
And so Leonardo DiCaprio was on set yesterday filming in several costumes, first at the house, in pyjamas, and then at night with Dame Judi Dench and Armie Hammer, who plays his lover, all dressed up for a blacktieaffair.