Get to know Abby and Brittany, the conjoined twin stars of TLC's "Abby and Brittany"

TLC, the television home of bordering-on-exploitative shows such as 19 Kids and Counting, starring the ever-growing Duggar family, Toddlers and Tiaras (and it's most recent spinoff, Here Comes Honey Boo Boo) and Hoarding: Buried Alive has added a new duo to its fall lineup.

Abby and Brittany Hensel, 22-year-old conjoined twins and the stars of the new Abby and Brittany, premiering Tuesday, are no stranger to TV cameras.

The twins, who have separate heads and spinal cords and a number of duplicated organs starred in the Discovery Channel documentary, Joined for Life in 2003, TLC's Joined for Life: Abby and Brittany Turn 16 in 2006, and Extraordinary People: The Twins Who Share a Body in 2007.

The girls drive, attend college at Bethel University in St. Paul, Minn., and generally try to live as normally as they can.