As James Gunn went on to elaborate on the costuming process for Superman, the director spoke with leading man David Corenswet, who brought up a very interesting wrinkle in the superhero-suit conversation. According to Gunn:

With just days to go before the worldwide launch of the first teaser trailer, The Wrap visited the Cleveland set of "Superman" this past June, where director James Gunn was battling the elements to bring his vision of DC's Boy Scout to life.

Some of the biggest headlines to emerge while James Gunn was shooting “Superman” came from set photo leaks that revealed the new Man of Steel costume would include the superhero’s iconic red trunks. Zack Snyder famously got rid of this part of Superman’s costume during Henry Cavill’s tenure with the character.