How Well Do 'XO, Kitty' Stars Gia Kim and Sang Heon Lee Know Each Other?

Gia Kim and Sang Heon Lee took sibling rivalry to the next level in Marie Claire's How Well Do You Know Your Co-Star? The real-life brother/sister pair and 'XO, Kitty' castmates talked secret tattoos, growing up together, and first jobs while also revealing what they hope happens in season 2 of the hit Netflix show. So let's see how well Gia Kim and Sang Heon Lee know each other ★ Find Marie Claire on... ★ Web: https://www.marieclaire.com/ Instagram:   / marieclairemag   Twitter:   / marieclaire   Facebook:   / marieclaire   SUBSCRIBE to Marie Claire for the latest interviews with your favorite stars: http://bit.ly/SUBSCRIBEtoMARIECLAIRE ★ Marie Claire Series ★ How Well Do You Know Your Co-Star:    • Josephine Langford and Hero Fiennes-Tiffin...   Shelf Portrait:    • Alanis Morissette Takes Us Inside Her Mass...   Pop Quiz:    • Megan Thee Stallion Tells All In A Savage ...