Jennifer Nicole Lee (born June 13, 1975) is a fitness model, actress, and author. She is known for losing 70 pounds and launching a career as a fitness guru after bearing two children.

Jennifer Nicole Siciliano was born in Rochester, New York to Italian immigrants; the family later moved to Tennessee. She earned a Bachelor's degree in international relations from the University of Tennessee at Knoxville.

After bearing two children and reaching 200 pounds, Lee lost 70 pounds, was crowned "Miss Bikini America", and launched a career as a "fitness guru". Her books have been published both electronically and in print. She also launched a line of swimwear.

Lee was named Muscle & Fitness Magazine's 2006 Ms. Muscle and Fitness, a title she shared with Alicia Marie. She has appeared on "Inside Edition" "Oprah", and "The Early Show".

Each of her e-books is sold through a dedicated web site: "Crack the Code", "The Fitness Model Program", "The Sexy Body Diet", "101 Things Not To Do If You Want to Lose Weight", "Get Fit with JNL", "Get Fit Now With JNL", and "The Bikini Model Diet."

Lee stars in the “Fabulously Fit Moms” fitness DVD series. The series, started in 2007 with "The New Mom Workout", "Total Body Workout", "Lower Body Burn" and "Super Energized Workout."Two more titles were released in 2008, "Upper Body Blast and "Sleek and Sexy Workout".

Her first book to be published in print was The Mind, Body & Soul Diet: Your Complete Transformational Guide to Health, Healing Happiness, released on January 1, 2010. Jennifer Nicole Lee's second hard copy published book is entitled "The Jennifer Nicole Lee Fitness Model Diet: JNL's Super Fitness Model Secrets to a Sexy, Strong, Sleek Physique".