"We just need to tell everybody to keep the prayers up because the doctors are doing everything they can for her right now," the 60-year-old actress' brother, Todd Fisher, told ABC News. "She's a real survivor and always has been and I would expect the best from this. That's how we’re approaching it."
Harrison Ford, who played Han Solo opposite Fisher in "Star Wars," said in a statement obtained by ABC News: "I'm shocked and saddened to hear the news about my dear friend. Our thoughts are with Carrie, her family and friends."
Fisher's other former co-stars took to Twitter, including "Star Wars" co-stars Mark Hamill (Luke Skywalker) and Peter Mayhew (Chewbacca), and "The Force Awakens" co-star Gwendoline Christie (Captain Phasma).