Olesya Rulin was 21 in High School Musical 3: Senior Year when she played the character 'Kelsi Nielson'.
That was over 16 years ago in 2008.
Today she is 38, and has starred in 21 movies in total, 7 of those since High School Musical 3: Senior Year was released.
In High School Musical 3: Senior Year, I think Olesya Rulin looks: