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Nick and Aaron Carter mourning sister's death

Backstreet Boys star Nick Carter and his singer brother Aaron are mourning the death of their sister, who has died at the age of 25.

The pop siblings' sister Leslie Carter, who was an aspiring singer, passed away on Tuesday (31Jan12) in New York.

A spokesperson for the Carter family confirmed the news to Access Hollywood, saying in a statement, "Our family is grieving right now and it’s a private matter. We are deeply saddened for the loss of our beloved sister, daughter, and granddaughter, Leslie Carter. We request the utmost privacy during this difficult time."

It was not known what caused the mother-of-one's death as WENN went to press.

Leslie's single Like Wow! appeared on the soundtrack to 2001 film Shrek.