A few days ago saw it learned that The Avengers 4 was seeking women to be involved in a scene appearing as 1960s secretaries/clerks, with it speculated the scene may involve Hayley Atwell as Agent Carter.
On top of that, Hayley Atwell recently visited Marvel Studios and producer Louis D'Esposito.
Now further proof that Hayley Atwell might be appearing in Avengers 4 comes from her Instagram account, as Hayley Atwell posted an image of herself where she apparently has an old hair do along with mo-cap dots on her face, which may be used to either age the actress or even make her look younger.
Chris Evans was recently spotted on the set of Avengers 4, so maybe the two are having some sort of scene together.
The Avengers 4 has a May 3, 2019 release, with The Avengers: Infinity War hitting a year prior on May 4, 2018 directed by Joe and Anthony Russo.
As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain.