How old was Greta Gerwig in I Thought You Finally Completely Lost It?

Age is one of those behind-the-scenes facts that fans love to uncover. It helps us understand the context in which they took on the role. Here’s the answer to that particular curiosity.

The age of Greta Gerwig while starring in I Thought You Finally Completely Lost It was:

24 years old

This is the age we determined through our research and timeline.

To determine the age, we considered the first day of the year I Thought You Finally Completely Lost It premiered:

January 1, 2008

And the date of birth of Greta Gerwig, which is:

August 04, 1983

Because movies often premiere within a year of starting production, Greta Gerwig might have been either one year younger or older while filming some scenes.