Rita Ora collapsed on the set of her photo shoot in Miami Beach yesterday. The singer's doctor -- David Farcy, told TMZ that Rita was treated for heat exhaustion and dehydration. She was discharged hours later and is said to be doing fine. Rita was apparently in the middle of a photo shoot for Madonna's Material Girl campaign in Miami when she became ill. The singer was reportedly preparing for the photo shoot on the beach near the SoHo Beach House hotel when she fainted in her makeup trailer.