Luke Bryan Reveals How His Sister Tragically Died

In 2007, Luke Bryan 's sister Kelly suddenly died—and no one's ever fully known why.

She was a healthy, 39-year-old mother of three who died at home. Her death was part of a succession of family tragedies in the Bryan family, which also included—seven years later—the death of Kelly's husband Ben Lee Cheshire. That's why Bryan and his wife Caroline adopted their three children, who ranged in age from 13 to 20 at the time.

But fans have never fully understood why Kelly died, and many have assumed that the Bryan family were concealing her true cause of death from the public.

Previously, Bryan simply said it was "like someone turned the lights out."

He was careful to steer speculation away from theories about overdose or suicide, but other than that, he didn't offer too many answers.