Laura Helene Prepon was born on March 7, 1980, in Watchung, New Jersey. She is the youngest of five children: a brother named Brad and three sisters: Danielle, Jocelyn, and Stephanie. Her father, Michael, was an orthopedic surgeon, and her mother, Marjorie, was a high school teacher. Prepon experienced a personal loss in 1993, when her father passed away while undergoing heart surgery. Her family grew extraordinarily close while coping with the loss of Prepon’s father. According to Prepon, her entire family still gathers annually in New Jersey for Thanksgiving, where their quirky traditions include singing Meat Loaf’s “Paradise by the Dashboard Light” together at the dining room table.

Prepon attended Watchung Hills Regional High School until 1995, when, at age 15, she fell in love with acting and transferred to the Total Theatre Lab in New York City. While undergoing intensive acting training, Prepon also studied ballet, jazz and modern dance and appeared in stage productions of A Woman of Property and Ascension Day. Strikingly beautiful, the 5-foot 10-inch aspiring actress first found work as a model. Despite traveling the globe to model in Paris, Milan and Brazil, Prepon quickly developed a distaste for modeling. She began acting at the young age of 15 as well as dancing–ballet, jazz, and modern. She also played soccer and other sports.

Laura loves vintage clothes and her hobbies include cooking, traveling, horseback riding, playing piano and dancing. Her favorite book is ‘The Hobbit’ by J.R.R. Tolkien.

Actress, Author, and Producer, Laura Prepon has revealed that she maintains an exclusively organic diet. In 2016, collaborated with nutritionist Elizabeth Troy on a diet/wellness book The Stash Plan wherein she discussed her struggles with weight, digestion as well as low energy

In June 2017, a pregnant Prepon confirmed on Live with Kelly and Ryan that she and her fiancé, actor Ben Foster, were expecting a girl. In September 2017, Prepon talked of being a working mother. Prepon gave birth to their daughter Ella in August 2017 and get married in June 2018.