Gigi Hadid: Get to know the birthday girl! SI Staff | Jun 11, 2014Ben Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIBen Watts/SIPublished Jun 11, 2014SI STAFF