Charlene Choi Cheuk Yin is a member of the Cantopop girl group Twins,alongside Gillian Chung.Charlene was born in Vancouver, Canada. However her family moved back toHong Kong a year later. Charlene completed her schooling at a number of different institutions. Sheattended Marymount Secondary School, later on she attended RosaryhillSchool. It is not entirely clear where she completed the rest of herschooling or ever attended post-secondary education like her Twins-partnerGillian Chung.In 2001, she was offered to form the Emperor Entertainment Group musicalgroup Twins with Chung (colloquially known as Gill). Choi since then hasbeen come to known as Charlene, or simply Ah-Sa.