Gigi Hadid seens with her sister Bella Hadid in bikini on Mykonos Island, Greece. 29 Jul 2019 Pictured: Bella Hadid, Gigi Hadid. Photo credit: Savio / MEGA TheMegaAgency.com +1 888 505 6342 (Mega Agency TagID: MEGA475237_012.jpg) [Photo via Mega Agency]