She began dancing and acting at a young age, graduating from Los Angeles Valley College with a degree in speech and communication.

Evigan began dancing professionally and appeared in numerous music videos, most notably "Numb" by Linkin Park (2003).

She has since been noted as a Scream Queen for starring in numerous horror and thriller films, including S. Darko (2009), Sorority Row (2009), Burning Bright (2010), Mother's Day (2010), The Devil's Carnival (2012), Stash House (2012), Mine Games (2012), Alleluia!

A professional dancer, Evigan has appeared in music videos for Linkin Park, Flo Rida, T-Pain and Enrique Iglesias.

The film, which met with negative reviews with Rotten Tomatoes (receiving 24%), achieved box office success earning a worldwide gross of $148,424,320.

In August 2008, Summit Entertainment announced Evigan has signed on to portray the central character Cassidy Tappan in the remake of the low-budget horror film Sorority Row.

The screenplay was written by Good Luck Chuck writer Josh Stolberg and directed by Stewart Hendler.

In the film, "A young woman and her autistic brother find themselves trapped in their house with a ravenous tiger during a hurricane".

She was scheduled to star as the protagonist of Left for Red: Betrayal, the first of a trilogy which centered on a young woman seeking vengeance on the soldiers who sold her to a sex trafficking group, but has been shelved due to budget issues.

In 2015, Evigan announced, via Twitter that she would be recurring, alongside Danny Trejo in the second season of the Action-Vampire TV Series From Dusk Till Dawn: The Series as Sonja, "an American expatriate working as a tattoo artist in a Mexican Mercado – who also has a sideline forging papers and passports out of her back room".

In 2017, she joined director James Kicklighter's Angel of Anywhere, with co-stars David A. Gregory, Ser'Darius Blain and introducing Axel Roldos.