Driving Miss Wealthy (2004)

Leung plays Jennifer, the spoiled-rotten daughter of a millionaire. When Jennifer's father realizes that she's spending way too much money, he hires Kit (Lau) to pretend to be a Filipino chauffeur and chaperone her. Then, Jennifer's father decides that he's going to teach her the value of money and hard-work, so he pretends to be ill, leaving all the money to Pamela, his business partner. Pamela kicks Jennifer out into the street to live with Kit/Mario. The two learn to live together and work hard to get back on top.