Christina Ong ($1.8 billion)
The Malaysian couple currently residing in Singapore has had their wealth through diversified assets. Their biggest investment is their share in Mulberry, a well-known British handbag producer.
Other assets of the couple include Hotel Properties Ltd, fashion retailer Club 21 as well as NSL, an industrial company that runs OBS.
Meanwhile, Christina founded and operates the COMO Group, which includes the COMO Hotels and Resorts.
The couple also has their eyes on the Singapore Grand Prix and have stakes in Kuo International, an oil trading company ran by Peter Fu Chong Cheng, which is Christina’s brother.
She is also Chairman to the National Parks Board and is one of the board members of Singapore Airlines.