The caption is directed to online "trolls" who she says write "unkind things." She writes, "This is how I look. I feel happy" before adding that she thinks she looks "strong and healthy."
Slamming body critics is nothing new for Schumer. She told Glamour magazine it was "not cool" in another Instagram post last month for mentioning her in an issue focused on plus size fashion.
She wrote that there's nothing wrong with being plus-size, but disputed having a plus-size body, suggesting that labeling her body type that way could have a negative influence on young girls.
With Ben Rekhi as the director, the film, also starring Sam Keeley and Hera Hilmar, is an English-language spiritual fantasy thriller set in the mystical world of Himalayan yogis.
The image that Johnson shared on Instagram on Thursday is reminiscent of the classic “Baywatch” cast images, which have characters running in slow motion on the beach.