Today is Pretty Little Liars star Troian Bellisario's birthday. The actress may play a 17 year old on TV but she's way older than her character in real life — and she's not the only one! A ton of stars play teenagers on your favorite TV shows even when they're not teens anymore.
Click through to see 14 celebs who are older than their teenage characters, then let us know whose age shocks you the most in the comments below.
Troian Bellisario plays 17-year-old Spencer Hastings on Pretty Little Liars.
Click the arrow to see how old she is in real life.