Karen Gillan was 28 in Guardians of the Galaxy Vol. 2 when she played the character 'Nebula'.
That was over 7 years ago in 2017.
Today she is 36, and has starred in 46 movies in total, 22 of those since Guardians of the Galaxy Vol. 2 was released.
In Guardians of the Galaxy Vol. 2, I think Karen Gillan looks: