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.
Reality TV star Kylie Jenner's rumoured relationship with singer PartyNextDoor, whose real name is Jahron Anthony Brathwaite, is said to be only for a show as she is still "heartbroken" over her split from rapper Tyga.
Actor Brad Pitt has been hailed as a hero after saving a young girl from being crushed by a crowd of film lovers who had assembled to watch filming of his latest movie, "Allied".