The Independent has been praised for her honest portrayal of Donna on That '70s Show, which marks her network television debut. She's received critical acclaim for her performance and Entertainment Weekly calls her a "rising star" and "wonderfully deadpan." Raised in Watchung, NJ, a short distance from New York City, Prepon's desire to act began at a young age and she started studying the craft at 15. She went on to study theater at the Total Theater Lab in New York. Prepon has always loved dance and has trained in ballet. She is also a sports enthusiast and played tennis on her high school team. In addition, she enjoys gymnastics and riding horses.

During her hiatus from That '70s Show, Prepon worked on the independent feature The Pornographer: A Love Story. Co-starring with Martin Donavan, Kathleen Chalfant and Irene Jacob, the film tells the story of an obsessive relationship between a director and an actress. Another movie she appears in, Slackers, is a film about that all too common collegiate lifestyle of slacking; ie, not doing what you're there for. Other members of the cast of Slackers include: Jason Schwartzman Devon Sawa and James King Another of Laura's feature credits include the indy feature Southlander.

Opposite Beck Beth Orton and Hank Williams Prepon's character "Seven=Five" is a beautiful, young television psychic who ultimately alters the outcome of all the characters' lives. A relative newcomer to the entertainment industry, Prepon portrayed the lead character on the groundbreaking Internet series They Go On. She also appeared in numerous theatrical presentations, including A Woman of Property and Ascension Day. She currently divides her time between her family in Watchung, NJ and Los Angeles, CA.