Larson even honored the moment by coining a new name for herself and her workout buddy.
The photo inspired all sorts of excited reactions from fans of both Bries.
One fan wanted to make things perfectly clear to people unfamiliar with these two actresses.
Some had questions. Lots of questions.
The photo drove one guy to offer Marvel a casting suggestion for a future film.
Another summed up the overall feeling with a slightly cheesy pun.