Selena Gomez was 22 in Neighbors 2: Sorority Rising when she played the character 'Phi Lamda President'.
That was over 8 years ago in 2016.
Today she is 31, and has starred in 49 movies in total, 15 of those since Neighbors 2: Sorority Rising was released.
In Neighbors 2: Sorority Rising, I think Selena Gomez looks: