Andrea Schwartz, the Brazilian ex-pat who settled in Manhattan and became a madam with powerful clients, is back in the news. And she's as saucy as ever, this time denying that she's a lesbian. Tell us more! Schwartz, who was arrested in 2006 after the vice squad busted her Midtown prostitution ring from her apartment (where she also sold coke to customers), was sentenced to 18 months in jail, which she's already served, and probably......