He most certainly cannot play basketball in that! It sounds like it was a fun project for the costume designer to have LeBron James wear costumes for a number of beloved franchises but, as she shared, itâs also the âmost challenging projectâ sheâs ever done, too. Working on Space Jam: A New Legacy also meant creating new jerseys for the Tune Squad and costumes for characters from It, A Clockwork Orange, Wizard of Oz and so forth, who stand on the sidelines of the final game.