THE 20-square-meter room with concrete walls is Callista Aldenia Nugraha’s creative space. Almost every day, after eating her breakfast, the 16-year-old girl designs and creates high-value apparel using second-hand fabric and clothing. Who would have guessed that the former garage in Callista’s home in Mekar Wangi, Bandung, West Java, is where these outfits are created. American singer Billie Eilish is a fan of Callista’s fashio