Kathleen is in the 200 Butterfly at the 2008 Beijing Olympics.
- CLUB: Swim Atlanta (SA-GA)
- DOB: Feb 21, 1990
- HEIGHT: 5' 11" (180.3 cm)
- HOMETOWN: Atlanta, Ga.
- RESIDENCE: Roswell, Ga.
- BIRTHPLACE: Athens, Ga.
- COACHED BY: Mark Minier
- High School: Marist HS '08
- College: Texas '12
- Parents: Brian and Regina Hersey; father is a consultant, and mother is a freelance editor
- Sports Played Before Swimming: Basketball, tennis
- Nickname(s): Legs; nicknamed Legs because her friends all say she is so tall and has such long legs
- Pet(s): One dog; Hoover is a German short-haired pointer
- Hobbies Outside the Pool: Playing tennis. photography, scrapbooking, baking
- Ultimate Way to Relax: Having "movie day" with friends
- Most Influential Person: Father and friend (Mary Brown); "I admire them because of their ability to transcend great difficulty with grace and determination."
- Training Stats: Swims 9,000 yards per day, 3-4 ½ hours a day, 6 days a week
- Is adopted
- her birth father played football in college, and her mom was a collegiate swimmer
- When she was younger, wanted to be a princess
- drives a 1981 Mercedes Diesel
- U.S. city: New York City
- int'l destination: Sydney
- summer activity: being lazy by the pool or at the beach
- tv: Grey's Anatomy