Rebecca Romijn was 32 in X-Men: The Last Stand when she played the character 'Raven Darkholme / Mystique'.
That was over 18 years ago in 2006.
Today she is 51, and has starred in 45 movies in total, 23 of those since X-Men: The Last Stand was released.
In X-Men: The Last Stand, I think Rebecca Romijn looks: