Of course, Rihanna wasn't shy about how she spent her Saturday. She flooded her Instagram with photos from the march that showed off what she wore: a pink "This Pussy Grabs Back" sweatshirt and a tutu. Later she even rocked a "We Should All Be Feminists" shirt from Dior in honor of Chimamanda Ngozi Adichie's book of the same name.
"So proud to be a woman!!" she wrote in one shot of her posing with signs from the march. "So proud of the women around the world who came together today for pro-choice!"
Rihanna was also seen chanting, "My body, my choice," while another clip shows her doing her thing to a call of, "Welcome to your first day, we will not go away."
It was all a bit surreal for those in attendance, including a woman who tweeted, "The time I got off a plane from Australia, headed to Trump Tower & ended up protesting next to @rihanna."