The first of many Mirror Universe episodes gives us evil sexy Kira! Altruistic Quark! Nasty-ass Odo! Crazy-ass Sisko! Doofus Garak! And pretty much exactly the same O'Brien. The DS9 Rewatch makes a "Crossover."
Kira returns to her quarters with the dress, where Garak is waiting. He assures Kira that the Intendant will never let her leave, as she’s in love with Kira, her narcissism made flesh, as it were. He offers her a way home if she replaces the Intendant after Garak’s assassination of her that evening. Kira will spend a couple of weeks as Intendant to make it look good, then she’ll resign to explore her pagh (“or whatever”) and Garak will take over, leaving Kira and Bashir to go back home. Of course, if she declines, Garak will have the overseer kill Bashir.