Kim Kardashian was 25 in Kim Kardashian, Superstar when she played the character 'Herself'.
That was over 17 years ago in 2007.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 43, and has starred in 23 movies in total, 22 of those since Kim Kardashian, Superstar was released.
In Kim Kardashian, Superstar, I think Kim Kardashian looks: