Who Is the Oldest Little Liar?

Troian Bellisario (Spencer)! She was born on October 29, 1985, making her 27 years old. 

Troian is actually significantly older than her co-stars. Shay Mitchell (Emily) is next in line, at 26. Lucy Hale (Aria) is 23, and Ashley Benson (Hanna) is also 23.

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Pretty Little Liars Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.