Britney Spears was left red-faced when a clump of her hair extensions fell out while she was performing a rigorous dance routine onstage in Las Vegas. The singer was in the middle of a rendition of her hit single “Do Something” at the Planet Hollywood Resort and Casino, where she currently has a residency, when the artificial hair became detached. A sizable chunk of the wig slid off her head as she energetically crossed the stage, and the embarrassing moment was caught on camera in video footage which has emerged online. pears refused to let the mishap upset her, and she continued with her performance without stopping.