生日快樂

Louis Koo Tin-Lok

Siu Nam

劉若英

Siu Mai

Richard Ng

Mai's Father

陳小春

Cheng

Richie Jen

Himself

Carl Ng

Cheng

Lawrence Chou Chun-Wai

Danny

Wei Wei

Mai's Grandmother

李勤勤

Nam's Sister

郭羨妮

Yan

陳美詩

Teresa

曾寶儀

Lam Wai