In the decade since signing with a modeling agency at 17 years old, Gigi Hadid has become one of the most famous faces on the planet. Memorable ad campaigns, countless magazine covers and runways around the world have made Gigi a global icon. Now she is realizing a dream of becoming a designer herself with the launch of her new clothing line Guest in Residence. In this week’s “Sunday Sitdown,” Willie Geist sits down with Gigi to talk about her latest venture and how she hopes it will disrupt fashion.