Sweety is a Mandopop band from Taiwan, a duo consisting of Esther Liu (Chinese: ???; pinyin: Liú P?nyán; colloquially known as ?? Yan Yan) (born August 8, 1988) and Joanne Tseng (sometimes transliterated as Joanne Zeng or Joanne Zheng; Chinese: ???; pinyin: Z?ng Zh?qiáo; colloquially known as ?? Chiao Chiao) (born November 17, 1988).As of 2006, Sweety has released three studio albums and two soundtracks. The duo was formed in 2003 when Esther and Joanne were only 14 years old.Both members of the band are also actresses. Esther Liu starred as the lead actress in, respectively, Green Forest, My Home (???? L? Gu?ng S?n Lín)with Leon Jay Williams and Ethan Juan and The Magicians of Love (????? Ài Qíng Mó F? Sh?) in which Joanne was the Lead actress.