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The "House of Carters" lost one of their own this week when sister Leslie Carter was found unresponsive at her father's house. She was declared dead at Westfield Memorial Hospital in New York. Although the official cause of death has not been determined, authorities reportedly found prescription drugs at the scene. The 25-year-old, whose married name was Leslie Ashton, appeared on the "House of Carters" reality show with her siblings, including Nick, of the Backstreet Boys, and Aaron, who is currently starring in the off-Broadway musical "The Fantasticks."