Gigi Hadid stepped out in a jaw-dropping “naked” illusion dress at the Vogue World: Paris After-Party to cap off fashion week, RadarOnline.com has learned. Gigi, 29, served as co-host of the event — and became the talk of the town when she reinvented the silhouette for the star-studded event. After making a dramatic entrance riding horseback, decked out in Hermès, alongside fellow model best friend Kendall Jenner through Place Vendôme, the 29-year-old continued to turn heads for the Vogue World: Paris After-Party on Sunday, June 23. While the “naked” illusion silhouette has been done many time…