A garment steamer (1) comprising a base body (10) accommodating a liquid water tank (26); a liquid water pump (32), having a water inlet (32a) and a water outlet (32b), wherein the water inlet (32a) is fluidly connected to the liquid water tank (26). The garment steamer also comprises a steam head (50) that is moveable with respect to the base body (10) and that accommodates a steam chamber (70), having a liquid water inlet and a steam outlet, wherein said steam outlet includes at least one steam nozzle (76); a heating element (72) that is provided in or adjacent said steam chamber (70), and configured to evaporate liquid water passing through said steam chamber. A liquid water tube (38b, 38c) fluidly interconnects the water outlet (32b) of the water pump (32) and the liquid water inlet of the steam chamber (70) in the steam head (50).