Jodi Lyn O'Keefe was born in Cliffwood Beach, New Jersey in 1978. Lyn began modeling at the age of 8 after seeing her eldest sister Heather modelling. Girl modeled for various companies such as Gitano Jeans and DreamPhone. When she reached her teen years she attended Saint John Vianney High School in Holmdel, New Jersey.

After her sophomore year Jodi left school to star on the soap "Another World" (1964), where she played Marguerite Cory. After she left Another World she immediately landed the role of Cassidy Bridges on the hit CBS cop action/drama "Nash Bridges" (1996).

Jodi played Cassidy for all 6 seasons. While she was filming Nash Bridges she made her big screen debut in the 1998 Halloween sequel Halloween H20: 20 Years Later (1998). Jodi then hit the spotlight when she portrayed the snobby, popular and rich Taylor Vaughan in the 1999 hit teen flick She's All That (1999). Jodi then starred in three more movies before she began to keep a lower profile.