PET APPAREL/SIZE CHART Pet apparel for any occasion for both dogs & cats. Whether your feline or canine companion is looking for something comfortable or stylish and chic for a night on the town, we are sure you will find it. Pampered Pets offers an extensive line of apparel for cats, dogs and yes, even large breed dogs! How to measure your pet: Measure From Base Of Neck To The Beginning Of The Tail. To Measure The Girth Of The Pet: Measure Completely Around The Pet Wrapping The Measurer Around The Back And Down Around The Chest From Just Behind The Pets Front Legs, (Widest Part Of The Chest). (You make a complete circle from around the back and under the chest).