Some actors, like Shay Mitchell and Ashley Benson, were actually in their 20s or 30s even though they were playing young teenagers on-screen.
Pretty Little Liars: Original Sin' Cast Ages Compared to Characters
Everything We Know About Pretty Little Liars: Original Sin
Pretty Little Liars: Original Sin' Cast Ages Compared to Characters
This is how old the cast of Pretty Little Liars were compared to
How Old 'Pretty Little Liars' Stars Were Compared to Their Characters
Pretty Little Liars' Stars' Transformations: Cast Photos Then
Ashley Marin's Instagram, Twitter & Facebook on IDCrawl
Pretty Little Liars cast: Who is in Pretty Little Liars?
For people that have seen both PLL and Desperate Housewives, who
Pretty Little Liars' Cast: Where Are They Now?
Pretty Little Liars (season 1) - Wikipedia
Pretty Little Liars: See How The Characters Changed Over 7 Seasons
Ashley Marin's Instagram, Twitter & Facebook on IDCrawl
How Old 'Pretty Little Liars' Stars Were Compared to Their Characters