It's hard to imagine the ever-elegant Carolina Herrera shopping at Target, much less even talking about Target. So when we caught up with her at the New York City Opera’s theater debut last night, surrounded by swanky rich folks in expensive formalwear, we expected a blank look from her when we asked if she’d ever consider doing a diffusion line for, oh, someplace like Target. “Of course!” she said without hesitation. “If they asked me, of course.” Herrera says a line for a television network like HSN or QVC is not for her, but not because it’s too déclassé. “Isaac Mizrahi is a natural actor; he can be on television," she said in reference to his forthcoming QVC line. "Not many designers can do it, but he can."