JuliannaGuill was born on July 7, 1987 in Winston-Salem, North Carolina, USA. Her parents are Ann and Earl Guill. Also she has two siblings. Julianna grew up singing and acting. She began tap, ballet and jazz dance at an early age, and continued singing in the choir while studying at R.J. Reynolds High School.JuliannaGuill graduated from the high school in 2005. After that she decided to continue her education at New York University. Before moving to Los Angeles, Julianna performed in local theater productions.

Guill began her acting career at the age of 17 when she guest starred in the popular series One Tree Hill. She had a small role playing Ashley in television drama series created by Mark Schwahn. This led her to guest appearances on other television shows such as CSI: Miami, CSI: Crime Scene Investigation, How I Met Your Mother, and Cold Case.

JuliannaGuill’s first big role was in Take180’s web television series My Alibidirected by Oren Kaplan. She starred as Scarlet Hauksson in 18 episodes. The core plot of it revolves around a group of students who are sent to the principal after a large prank is pulled during the first period of school. That same year Guill was quickly cast in the lead role of Katy in Road Trip: Beer Pong. The film was a sequel to the comedy Road Trip and was released straight to DVD.

A year after the actress played Bree in an American slasher film Friday the 13th written by Damian Shannon and Mark Swift, and directed by Marcus Nispel. The film is a reboot of the Friday the 13th film series, which began in 1980, and is the twelfth installment in the franchise. Her role as Bree in the film is her most well-known to date. That same year, she appeared in My Super Psycho Sweet 16, an MTV-produced, made-for-TV film which premiered on October 23. Despite receiving mixed reviews from critics, the film acquired strong ratings on the night of its airing.The Apparitionof the Dark Castle production was added to her biography in 2012.

She stayed busy in 2009, taking on parts in The Apparition and Altitude, which was released in 2010 and in which she had a lead role. 2011 saw her co-star in Crazy, Stupid, Love alongside Steve Carell. In the same year, she made guest appearances on the TV shows Community and Psych. She earned a starring role on the Netflix original series Bad Samaritans which also featured David Faustino from Married With Children. In 2013 Guill appeared in an American police procedural crime drama television series Criminal Minds created by Jeff Davis. She portrayed Ashley Fouladi, the fifth victim of serial killer Tanner Johnson, in the episode Gatekeeper. The information about her current salary and net worth is hidden from the public. However, the mass media made an assumption that the sum must be around half a million dollars. Although neither the actress nor her representatives confirm this fact.