An adjustable animal garment, the garment comprising a tubular body defining a front opening, a rear opening, a chest portion and a back portion. The garment further comprises a plurality of discrete elasticized areas formed along a length of at least the chest portion or the back portion and configured to render said at least chest portion or back portion stretchable substantially transversely to the length of the chest portion or the back portion between an extended position and a rest position； and a fastening system connectable to the chest portion or the back portion, said fastening system being adjustably closing an opening along the length of the chest portion or the back portion.
