Karri was born in Fort Worth, Texas. She attended college in Tulsa before moving to Southern California to attend the American Academy of Dramatic Arts. After graduating from AADA she performed with the famed Groundlings comedy troupe (Sun Co) and the West Coast Ensemble theater company. Karri is best known for her role on the hit CBS series JAG where she portrayed "Lt. Harriet Sims" for 9 out of 10 seasons. Turner appeared in a recurring role on FOX-TV's "The X-Files" as Tara Scully, Dana Scully's (Gillian Anderson) sister-in-law. Additionally, she portrayed Eric Lutz's assistant, Honey Potts, on the NBC-TV's hit series "Caroline in the City." Karri voiced the Kathie Lee Gifford character on the Comedy Central animated series "South Park." Her other television credits include guest-starring roles in NBC-TV's "Suddenly Susan" and FOX-TV's "Wild Oats." Turner's feature film credits include Paramount's "It's Pat" and "Who's the Caboose," currently being screened at film festivals. In addition to television and film work, Turner has considerable stage credits including "Cereal," "Charlie's Aunt," "As You Like It," "Merchant of Venice," "Amadeus," "Godspell," "Talking With," "Hamlet," "South Pacific" and "Hay Fever." Turner resides in Los Angeles.
Attended the 2001 Florida Sports Awards in Jacksonville, Florida as a celebrity presenter and presented the Hometown Hero Jasper with Derrick Brooks of the Tampa Bay Buccaneers.