Karen Lucille Hale is an American actress and singer. Her breakthrough role as Aria Montgomery in the television series Pretty Little Liars (2010–2017) won her seven Teen Choice Awards, the most for any actress in a single series. She has also won accolades at the Gracie Awards and the People's Choice Awards.
Hale first became known in 2003, as one of five winners of the reality show American Juniors. She appeared in the film The Sisterhood of the Traveling Pants 2 (2008) before landing her role on Pretty Little Liars. While starring on the show, she appeared in the films A Cinderella Story: Once Upon a Song and Scream 4 (both 2011), released her debut album Road Between (2014), and began hosting Dick Clark's New Year's Rockin' Eve (2016–2021).
Hale's television roles following Pretty Little Liars include Life Sentence (2018), Katy Keene (2020) as the titular character, and Ragdoll (2021). Her continued film appearances include Truth or Dare, Dude (both 2018), Fantasy Island (2020), The Hating Game (2021) and Which Brings Me to You (2024).