Share Meanwhile Joseph, who is the CEO of a construction company, threw a fashionable brown coat over a white dress shirt he left untucked over jeans. Last year in September Yolanda became a grandmother for the first time when Gigi gave birth to her daughter Khai. Looking fab: The 57-year-old former Real Housewife Of Beverly Hills teamed a sleek cream coat with a matching turtleneck for her latest outing Swanking about: Yolanda, whose children include the supermodel sister-act of Gigi and Bella Hadid, accessorized with a pair of blue shades On Gigi's birthday last month Yolanda gushed on Instagram that becoming a grandmother 'awoke a part in my heart I never knew existed.'