Take your pup for a walk with her Good Girl Dog Shirt by Puppia. Heart and writing on back. Spaghetti straps. Made of cotton and spandex. Pullover style. Why We Love It: Show off what your dog is thinking, when you go out walking. This cute shirt in black has aqua trim, writing that says "Good Girl Taking a Walk in the Park" and has a sequined heart. It has a high-cut, stay-dry belly. Made of cotton and spandex.