Hayley Atwell was 36 in Avengers: Endgame when she played the character 'Peggy Carter'.
That was over 5 years ago in 2019.
Today she is 42, and has starred in 40 movies in total, 8 of those since Avengers: Endgame was released.
In Avengers: Endgame, I think Hayley Atwell looks: