In the hubbub of laughter at a house party in Dublin, the unmissable drag queen Davina Devine seems almost lustrous. A bright blonde wig descends in long wavy locks, framing a face bronze with tan. At one point in the evening, another guest smugly holds up their phone displaying a photograph of a svelte man in his 30s. “Is this you?” they ask. In recalling the encounter, Davina – who opts never to be seen out of drag in social media posts or photo shoots – beams a grin. “Someone was thinking they were being a sleuth,” she says, with…