AILING RAY J WAS DISCOVERED ON HOTEL FLOOR IN VEGAS BY SOPHIE MONK

Ray J owes his life to ingrown hairs — because TMZ has learned, the person who called an ambulance for him Monday morning is none other than model Sophie Monk, his ingrown hair endorsement partner.
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.