How old these 26 actors really were when they played high school students.

Chiselled jaws. Blemish free skin. Taut bodies.

These are the ‘teenagers’ of Hollywood and it’s a far cry from many of our experiences navigating high school. 

Casting directors have long been accused of stretching the limits of our imaginations by assigning roles of high schoolers to well-established, full-grown adults, and over the years we’ve cast a suspicious eye while watching some our favourite teen TV series… 

But don’t let age get in the way of telling a good story…

Olivia Newton-John, Grease.

Olivia Newton-John in Grease. Image: Paramount Pictures.

Grease was released in 1978 and became an overnight hit with our golden gal, Olivia Newton-John garnering international acclaim playing the role of sweet high schooler, Sandy. While her character was supposed to be an 18-year-old senior, Newton-John was actually 29 at the time and did a very convincing job of playing a fresh-faced teen.