"Our family is grieving right now and it's a private matter," the Carter family said in a statement. "We are deeply saddened by the loss of our beloved sister, daughter, and granddaughter, Leslie Carter. We request the utmost privacy during this difficult time."
Aaron's older sister and Nick's younger sister, Leslie was signed to Dreamworks Records the late '90s. She had a song featured on the "Shrek" soundtrack (titled "Like Wow!"), but her debut album was never released by the label.
She was featured alongside her family in the 2006 E! reality show "House of Carters."
Leslie Carter and her husband Mike gave birth to a daughter, Alyssa Jane, in April 2011.