The Rhode beauty founder also closed out summer by showing off a rare full glam beauty moment.Hailey Bieber at The 2026 TIME100 Gala held at Jazz at Lincoln Center on April 23, 2026 in New York, New York.Credit: Getty ImagesThe GistHailey Bieber debuted a moody fall hair transformation in a photo shared by a celebrity hair stylist on September 18.The Rhode mogul unveiled her darkest hair color in over a decade.Bieber has gravitated towards a cop…