Curiosity is an invaluable therapist tool. But it also has a shadow side. As therapist and sex educator Lucie Fielding explains, trans and gender expansive people are only the latest to experience invasive and objectifying questioning in the guise of clinical curiosity – especially when it comes to sex and bodies. Here, the author of Trans Sex proposes a new curiosity framework to benefit all clients, and shares three principles for practising with ‘ethical curiosity’.