Sophie Khoo

Sophie Khoo is one of the secondary protagonists in the book series by Kevin Kwan, she is mainly featured in the first book of the series, Crazy Rich Asians.

Background
Sophie is a pediatric surgeon and heiress of one part of the Khoo company, her billionaire family is said to be among the richest in the world.

Sophie has an older brother named Colin Khoo, and is niece of Harry Leong by her mother's side; making her also heir to a percentage of the Leong fortune.

Crazy Rich Asians
Sophie first introduces herself to Rachel at the bachelorette party of Araminta Lee as Astrid's cousin. They get along very well and converse with each other about their own lives.

Rich People Problems
Sophie is the first to inform her cousin Astrid Leong of the public release of her sex video with Charlie Wu when an oblivious Astrid arrived at a board meeting for the acquisitions board of the Singapore Museum of Modern Art, only for her fellow members to start a motion for her ousting.