Fans have expressed concern over Nick Carter's appearance after he shared a selfie on Instagram ahead of Backstreet Boys' Las Vegas residency rehearsals. Some fans commented on his thin frame, while others defended him, urging critics not to comment on his body. Carter's return to the stage follows the tragic deaths of three of his siblings, Leslie, Aaron, and Bobbie Jean Carter. The singer admitted to still grieving his late brother and addressed the losses his family has endured over the years. The Backstreet Boys are set to begin their residency in July at the Sphere in Las Vegas.