Vivian Hsu (Chinese: 徐若瑄; pinyin: Xú Ruòxuān; Wade-Giles: Hsu Jo-hsüan; Japanese: ビビアン・スー Bibian Sū; born March 19, 1975 in Taichung, Taiwan) is a renowned singer, actress, and model who has gained remarkable popularity in East Asia, mainly in Taiwan and Japan.