Cathy Chui is marrying into one of the city's three wealthiest families.
Though bridegroom Martin Lee Ka-shing is the younger of two sons, people close to the Lee family, headed by Henderson Land boss Lee Shau-kee, say he is the heir apparent and being trained to take over the empire.
One reason is that older brother Peter Lee Ka-kit seems to have taken less interest in the family business since Henderson China, which he headed, was privatised earlier this year and he started to devote more time to his lifelong interest in Buddhism.
According to rankings by Forbes magazine this year, their father is the 37th richest man in the world, with a net worth of US$11 billion.
In 1996, he was the world's fourth-richest man, worth US$12.7 billion, ahead of even Cheung Kong (Holdings) boss and his son's namesake Li Ka-shing, who is at the 10th spot on this year's rich list.
Mr Lee's wealth took a bad hit during the Asian financial meltdown.