Article continues below advertisementLuke Bryan is setting the record straight about the "misinformation" surrounding his sister Kelly Bryan's unexpected death in 2007. The country star opened up about the tragedy during a recent episode of "All There Is with Anderson Cooper," revealing details that have long been speculated by fans."I've never really explained what happened to my sister," Luke said. "There's some misinformation out there on the internet, and I think some people kind of wonder what happened and think that we've tried to cover it up.