Description Originally posted by: uk.youtube.com Singing sensation, Rihanna has caused concern as she was rushed off stage in Sydney where paramedics treated her as she passed out! Worried fans saw Rihanna being lowered down from a harness with her boyfriend Chris Brown to perform her hit single Umbrella when the drama began! We will bring you more info on Rihanna's condition as soon as we receive it! Watch Rihanna running off stage at the end of her performance
