Rihanna hunched over and ran off stage during her concert at Acer Arena in Sydney, Australia, concert on Friday (November 7). The 20-year-old was performing ‘Umbrella’ with boyfriend Chris Brown when the incident occurred. “It was very hot at the venue, so after Rihanna’s set was over, she went off stage to sit down, catch her breath and have some water,” the singer’s rep insisted to E! News. Watch footage via YouTube below.