How old was Kat Dennings in Day One?

Have you ever watched a movie and found yourself curious about a celebrity’s age at the time? That detail can add a new layer of appreciation to their performance. Let’s dive into that fascinating detail.

During the filming of Day One, Kat Dennings was:

25 years old

Based on our estimate, that was the actual age of the celebrity at the time.

We calculated the age by referencing the first day of the year Day One was launched:

January 1, 2012

And the known birth date of Kat Dennings:

June 13, 1986

Movies tend to be released within a year of filming, so Kat Dennings may have been one year off from the listed age in certain scenes.