Dianna Charlotte Agron (born April 30, 1986) is an American actress, singer, producer, director and screenwriter, best known for her portrayal of Lucy Quinn Fabray on the television series Glee. Agron has appeared on television shows such as Shark, Close to Home, CSI: NY, Numb3rs and a recurring role on Veronica Mars. She then appeared as Harper on a 13-episode series of short films called It's a Mall World, directed by Milo Ventimiglia, and airing on MTV, and then on the second season of Heroes as Debbie Marshall, the head cheerleader/captain of the cheer squad at Costa Verde High School, also with Ventimiglia. Dianna has also hosted a mini Music Festival for 826LA in Los Angeles called Chickens in Love.
She was among many young Hollywood stars selected to be in Wal-Mart's Ocean Pacific spring 2010 marketing campaign. The national campaign debuted in fashion, lifestyle and entertainment magazines such as Elle, Teen Vogue, Seventeen and Cosmopolitan, outdoor and online at the official Ocean Pacific website. In addition, the celebrities hosted an Ocean Pacific party in Los Angeles in late April and made personal appearances on behalf of the brand.
Agron's most notable role to date is as Lucy Quinn Fabray, a high school cheerleader, on the FOX series Glee, which has received high ratings and critical acclaim, including a Screen Actors Guild Award and a Golden Globe, since the series began in May 2009.
In 2010, Agron directed the music video for "Body" by Thao with the Get Down Stay Down.
In 2010, Agron played the small role of Natalie, girlfriend to main character Ali's love interest Jack, in the movie Burlesque alongside Christina Aguilera, Cher, and Stanley Tucci.
Agron was chosen by People to be part of their Most Beautiful 2010. She also came 26th in the 2010 Afterellen.com top Hot 100 list.
Agron appeared alongside Alex Pettyfer and Timothy Olyphant in the 2011 science-fiction action thriller I Am Number Four, directed by D. J. Caruso.