Lauren Sánchez Bezos appeared all smiles alongside her friend Anna Wintour in New York today to unveil the Metropolitan Museum of Art’s new Costume Art exhibit ahead of the Met Gala this evening . Sánchez Bezos, whose sponsorship of this year’s star-studded fashion event and accompanying exhibit with her billionaire husband Jeff Bezos has proved controversial , was welcomed to the stage at a press conference Monday morning by Wintour, the gala’s chair since 1995, who credited Sánchez Bezos as the only person in the room who could “wear a bias cut dress while banking a helicopter.” Introducing the exhibit to a group of select press, including The Independent , Wintour called Sánchez Bezos a “force for joy” and “generosity,” saying: “She and her husband, Jeff, have shown with this event that they genuinely, genuinely care about giving back.” Wintour added that Sánchez Bezos did far more than lending her name to the event; she attended meetings “full of enthusiasm and good ideas.” “Lauren is willing to shake up…