Lea Thompson was 56 in Sierra Burgess Is a Loser when she played the character 'Mrs. Burgess'.
That was over 6 years ago in 2018.
Today she is 62, and has starred in 85 movies in total, 8 of those since Sierra Burgess Is a Loser was released.
In Sierra Burgess Is a Loser, I think Lea Thompson looks: