Cobie Smulders was 32 in Avengers: Age of Ultron when she played the character 'Maria Hill'.
That was over 9 years ago in 2015.
Today she is 42, and has starred in 28 movies in total, 15 of those since Avengers: Age of Ultron was released.
In Avengers: Age of Ultron, I think Cobie Smulders looks: