Lilly Aspell (Young Diana) performed all the required physical stunt work herself at the age of 12, because it was deemed that she did a job better than her own stunt doubles.
As first reported by Variety, actress Gal Gadot was paid $10 million for this film (which she also produces) - 33 times more than what she made on the first film, Wonder Woman (2017) ($300,000).
In Greek mythology, the Amazon Asteria was one of those slain by Hercules when he came to Themyscira to take Hippolyta's girdle as one of his famous Labors. Asteria is also the name of the Greek goddess of stars.
Asteria's gold armor is based on the armor Wonder Woman wears in Alex Ross graphic novel "Kingdom Come." Ross commented in an interview that he was upset the studio didn't compensate him for using his design in other media besides comics.
In the montage early in the film featuring 80s Washington DC, several teenage girls shoplift a pair of sunglasses from a store called Commander Salamander. This was a real store in the Georgetown neighborhood of DC that specialized in new wave and punk attire, becoming a popular local destination throughout the '80s and '90s before it closed in 2010. Its reappearance during filming thrilled local residents who remembered the shop, and was featured in several local blogs and papers.