Avant-garde pop star Lady Gaga is baring all for the cover of the new Vanity Fair. In the fashion-filled September issue, which hits newsstands Wednesday, Gaga dons only a diamond choker and opens up about her drug use, saying she’s “terrified of heroin,” but does “mostly cocaine … a couple of times a year,” according to Us Weekly. The singing sensation also reveals that her previous drug use “led to disaster,” causing her to “hit rock bottom.” Gaga also discusses her controversial appearances at various New York ballparks this summer, including flipping the bird at the New York Mets’ Citi Field and her drunken antics in the Yankee clubhouse. “Of course I got drunk at Yankee Stadium," she said, adding that she let out her inner “slutty Italian girl” that fateful day. She does, however, deny some of the clubhouse claims. “Why would I rub my t--- in front of Yankees?" she says.