A garment, in particular a swim nappy, with an improved fit and formed from one or more substantially impermeable panels (6, 7, 8, 9) intended, in use, to cover a wearer's body between the waist and thighs. A top edge of the rear of the garment extends beyond the top edge of the front of garment in use so that the garment extends further up the wearer's back than the wearer's front. The top edge of the back of the garment may be convex, and the top edge of the front of the garment may be concave. The top edge of the garment may be formed by a waist band.