She has also released four books including a photo album. As an actress Leong has appeared in the films The Eye: Infinity, Bug Me Not!, Dragon Squad, A Chinese Tall Story, McDull, The Alumni, Isabella, Diary, Spider Lilies, Missing, and The Mummy: Tomb of the Dragon Emperor. For the film Isabella she won best Actress at the 2006 Fantasporto Awards and Best New Performer at the Golden Bauhinia Awards. Isabella dated Hong Kong billionaire Richard Li and the couple had three sons together including twins born in 2010. They split in 2011.
