Aaron and Nick Carter's 25 year-old sister Leslie died yesterday. She's an aspiring singer who is also a wife and mother to her 10 month-old daughter, Alyssa. Leslie passed away in upstate New York. The cause of her death is unknown.
A source close to the Carters says: "The family legitimately doesn't know what happened. They're still trying to find out."
Aaron is reportedly "completely blindsided" by his sister's untimely passing.
So sad. R.I.P.
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