The invention relates to a garment sanitizing device (1, 31) comprising a housing (2), a chamber (4) within the housing to receive one or more garments (14) to be sanitized. The chamber (4) comprises a bottom wall, a top wall, and opposite first and second sides each extending from the bottom wall to the top wall. The housing contains a fan (6) and one or more heating elements (10). The at least one heating element is configured to directly heat garments within the chamber by radiation, and the fan is configured to convey air via the at least one heating element to heat the air and to convey the heated air through the chamber to additionally heat the garments by the conveyed heated air. The at least one heating element (10) is disposed proximate the first side of the chamber to heat garments (14) within the chamber from the first side of the chamber by radiation, and the garment sanitizing device is configured such that hot air heated by the at least one heating element is conveyed into the chamber from the second side of the chamber. The invention also relates to a corresponding method of sanitizing a garment.