How old was John C. Reilly in Step Brothers?

There’s something captivating about discovering a celebrity’s age during a defining role. That kind of trivia can make the viewing experience even richer. Let’s take a closer look at that intriguing number.

While Step Brothers was being made, John C. Reilly was:

42 years old

After checking the dates, that’s the calculated age of the celebrity.

To determine the age, we considered the first day of the year Step Brothers premiered:

January 1, 2008

And the birth day of John C. Reilly, that is:

May 24, 1965

Since the release usually follows filming within a year, the age of John C. Reilly during the actual shoot may have been a year more or less than indicated.