Cloris Leachman was 52 in The Muppet Movie when she played the character 'Miss Tracy'.
That was over 45 years ago in 1979.
In 2021 she died aged 94, starring in 141 films in her career, 105 of those after The Muppet Movie was first released. If she were alive today she would be 98.
In The Muppet Movie, I think Cloris Leachman looks: