What member of Cantopop group Twins makes a special appearance in the film Love on the Rocks?
Love on the Rocks (film):  The film stars Louis Koo and Gigi Leung, with special appearances by Charlene Choi and Donnie Yen. Charlene Choi:  She is a member of Cantopop group Twins, along with Gillian Chung.
Charlene Choi