“You need to imagine the complete life of a character” – Catherine Martin, the costume designer behind Baz Luhrmann’s Elvis

See Manolo Blahnik’s custom shoe sketches for Baz Luhrmann’s Elvis epic

See Austin Butler as Elvis in Baz Luhrmann’s Elvis biopic

Kelvin Harrison Jr is set to play BB King in Baz Luhrmann’s new Elvis biopic

Which of these five actors would make the best Elvis Presley?