Gigi Hadid gave her Instagram followers a treat on Thursday evening, sharing a bunch of throwback snaps from her April birthday celebrations.The sweet throwback photos include some precious family moments - including one where the model was pictured kissing beau Zayn Malik, while another saw them enjoy delicious cocktails.MORE: Gigi Hadid and Zayn Malik mark special occasion with baby KhaiWATCH: Gigi Hadid returns to work after giving birth to baby daughter"Taurus szn photo dump," she wrote