The tennis champion wore the body suit after a return to the court after maternity at the French Opens, revealing her outfit made her feel like a "warrior princess" from Wakanda - the fictional nation where the film is set.
Just like the flexible queen she is (mentally and physically), the athletic multi-champion chose to shake off the ban by marking her return to the skirt-life in a leveled-up way.
This is she at the 2018 US Open, taking no shot for granted. Who will come out on top?
"Olympia doesn't celebrate birthdays", said Williams. But in terms of experience it is as ever Williams who has the advantage.
Caroline Garcia is the defending champion, past year she enjoyed an unbelievable Asian swing winning both Beijing and Wuhan titles.
Williams arrived in NY without any form to speak of after early exits in San Jose and Cincinnati.
The American said she'd "found other methods" to handle the health issue and in her opening match at the US Open on Tuesday, she gave viewers their first taste.
The pair are last on Arthur Ashe Stadium and they follow Serena Williams' tie with Carina Witthoeft, which gets underway at midnight (BST). She began her US Open campaign against Caroline Dolehide of the U.S., of whom much is expected in the future.
The No. 5 seed pulled out a 7-6 (4), 5-7, 4-6, 6-3, 6-4 victory in a match that lasted 4 hours, 14 minutes. "They said. 'You may strip her from her superwoman suit but you can not strip her of her superpowers, ' and that is absolutely the truth".
Her serve was grooved and she hit off the ground with her customary menace.
She added that at least she'll be "keeping the sport clean".