A method for allowing a user to make a tailored garment (M) comprises the following steps: preparing at least one image (I) comprising a sample garment (C) of the same type as the tailored garment (M) to be made and also comprising a reference object (O) with actual standardized dimensions (M7,M8); measuring on the at least one image (I) the dimensions of the reference object (O) and a set of basic dimensions (M1,M2,M3,M4,M5,M6) of the sample garment (C); calculating the actual dimensional values of the set of basic dimensions of the sample garment (C) as a function of: the dimensional values of the set of basic dimensions (M1,M2,M3,M4,M5,M6) of the sample garment (C) measured on the image (I), the dimensional values of the reference object (O) and the actual dimensions (M7,M8) of the reference object (O); selecting the aesthetic features of the tailored garment (M) to be made; transmitting to a tailoring apparatus (4) the calculated actual dimensional values of the set of basic dimensions of the sample garment (C) and the selected aesthetic features; performing on the tailoring apparatus (4) a sequence of operations of cutting and sewing the tailored garment (M), to make the tailored garment (M) so its basic dimensions are substantially equal to the previously calculated actual dimensional values of the set of basic dimensions of the sample garment (C).