After months spent filming a series, most co-stars tend to bond during their time on set. But for actors Gia Kim and Sang Heon Lee, their bond goes way deeper than just castmates. The two star in Netflix's XO, Kitty respectively as Yuri and Min Ho, two wealthy, popular kids at Kitty's (Anna Cathcart) boarding school in South Korea. While they seem friendly enough on camera, you may be surprised to hear that Kim and Lee are actually real-life sister and brother.
In a round of How Well Do You Know Your Co-Star?, Kim and Lee tested their knowledge of one another. Given that they are siblings, you would think they would pass our test with flying colors...but, let's just say the trivia challenged brought to light some surprising secrets.
