Blog, EVENTS · December 7, 2018Gigi Hadid In Zac Posen @ 2019 Pirelli Calendar Launch Gala Gigi Hadid attended the 2019 Pirelli Calendar launch gala at HangarBicocca on Wednesday (December 5) in Milan, Italy. She wore a Zac Posen’s Fall 2018 gown. Author: fashionsizzle