Model May Have Saved Ray J's Life

As we reported, Ray was rushed to the hospital Monday morning for exhaustion and dehydration following the Billboard Music Awards -- and we're told Sophie's the one who discovered him in his hotel room and alerted authorities.

Sophie and Ray J had hosted a Billboard Awards afterparty the night before -- promoting their Prince Reigns ingrown hair shaving serum -- and after they returned to their hotel, we're told Sophie had a bad feeling Ray wasn't okay.

According to sources, the two went to their separate rooms -- but Sophie decided to check up on Ray to make sure he was alright ... and discovered him unresponsive on the floor.