The Grandma, played by Bess Meisler in My Big Fat Greek Wedding 2 is lovable comic relief for the movie. But when the neighbours in movie were wondering how old the Grandma is, it got me wondering too.
So, how old is Grandma in universe?
According to the IMDB page, it notes that she is "believed to be in her 90s". I'm fairly certain the age isn't confirmed at any point in the movie.