Hannah John-Kamen was 27 in Ant-Man and the Wasp when she played the character 'Ava Starr / Ghost'.
That was over 6 years ago in 2018.
Today she is 34, and has starred in 11 movies in total, 5 of those since Ant-Man and the Wasp was released.
In Ant-Man and the Wasp, I think Hannah John-Kamen looks: