Adjustable animal garment

An adjustable animal garment, the garment comprising:

• a tubular body comprising:
• a front opening;
• a rear opening;
• a chest portion;
• and
• a back portion;
• a plurality of discrete elasticized areas formed along a length of at least one of the chest portion and the back portion, the plurality of discrete elasticized areas being positioned adjacent one another on a same surface along said length, and configured to render said at least one of the chest portion and the back portion stretchable substantially transversely to the length of the at least one of the chest portion and the back portion between an extended position and a rest position;
• and
• a fastening system extending along the chest portion of the tubular body, said fastening system being configured for selectively closing an opening along the length of the chest portion,
• wherein the fastening system, upon closing the opening, defines a stretchable aperture formed in the chest portion and sized to allow passage of external members of the animal, and
• wherein the fastening system comprises a neck fastener extending in a lengthwise direction of the tubular body on a first side of the stretchable aperture and a chest fastener extending in the lengthwise direction of the tubular body on a second side of the stretchable aperture.