Sandra Ng recently revealed that she had played a prank on Louis by showing him photos of her wearing 38G breast prosthetics for her new movie Golden Chicken.
According to an article in Asian Pop News, Sandra laughed and said the usually cool and composed Louis Koo immediately turned bright red after seeing these flashy photos.
When asked about the photos, Louis said: "She is too ridiculous!
"She suddenly showed me her phone and there was her naked photo. "I was really embarrassed at that time.
"Actually, I knew her breasts were fake but you will still have that reaction when you see such photos.
"She was very happy as she had succeeded making fun of us."
Photos in the gallery show Sandra Ng and her ridiculous prosthetics for her new movie.