Laura Prepon was born on March 7, 1980 in Watchung, New Jersey. Her father, Michael, died in 1994. Her mother's name is Marjorie. Laura is the youngest of five children -- she has a brother, Brad, and three sisters, Danielle, Jocelyn, and Stephanie. She attended Watchung Hills Regional High School. She studied at the Total Theater Lab in New York City, where she appeared in numerous theatrical presentations.

She started studying acting at the young age of 15 as well as dancing - ballet, jazz and modern. She also played soccer and other sports. Before acting became her profession, she was a model, working in Paris, Milan and elsewhere in Europe.

Laura resides in Watchung when not filming in Los Angeles. She loves sneakers and vintage clothes. Her favorite book is 'The Hobbit' by J.R.R. Tolkien.
Hobbies include horseback riding, gymnastics, ice skating, ballet, tennis, golf, and playing the piano. Resides in Watchung, New Jersey, when not filming in Los Angeles. She and her fellow That '70s Show castmates, Topher Grace(Eric) and Danny Masterson (Hyde), have made guest appearances on King of the Hill, but not in the same episode. Ranked #84 in Stuff magazine's "102 Sexiest Women In The World" (2002) She is of half-Russian-Jewish and half-Irish-Catholic descent. Hated the Catholic school girl uniform she had to wear during the fifth season of That '70s Show. Due to the seven inch height difference between her and co-star Mila Kunis on That '70s Show, Laura and Mila are often filmed sitting down so that they can appear in the frame together. At other times Mila wears platform shoes to give herself four extra inches. Is very proud of being a New Jersey native. Said her favorite actor is probably Harrison Ford. Favorite book: "The Hobbit" by J.R.R. Tolkien. Living with actor Christopher Masterson Is a natural red head. Named #77 on the Maxim magazine "Hot 100 of 2005" list. Was featured as #50 in Maxim Magazine's "Hot 100 of 2002" supplement. (2002) Has attended U.F.C. shows. Together with Danny Masterson and Christopher Masterson has invested in "Card Player Magazine". Her mother is a high school teacher. One of her sisters is a lawyer. Used to be a ballet dancer.