They're some of the most recognisable faces on our screens, yet it's funny how often a desultory flick through random films one bored Sunday afternoon results in a lot of rewinding and exclamations of “I never knew she was in that!”
Here, we've discovered the very first acting jobs of 25 big name stars and collected them into one handy gallery for your perusal. Don't pretend you're not interested in a 21-year-old Helen Mirren's bikini-clad appearance in a Norman Wisdom film, or Jennifer Lawrence's Super Sweet 16. We won't tell anyone.
Check out the film and TV debuts of the rich and famous in our gallery below.