K-pop singer Hyuna, 33, whose stage name is a shortened version of her birthname Kim Hyun-ah, had collapsed while performing her iconic solo hit Bubble Pop. Video online showed her collapsing midway and then being carried offstage by her dancers and a member of staff. Hyuna posted on social media, apologising to fans. “I’m really, really sorry. Although it was a short period since the previous performance, I wanted to show a good appearance, but I felt unprofessional.” The singer said she did no