McCalls 4164 I made the shirt for Christopher it is comparable to a childrens size 2/3 but, it turned out looking like a childrens 4/5. Its kind of big on him. No Pattern Here! I thoght it would be cute to have some pants to match his shirt. He insisted that everything have Pockets, Pockets and more Pockets. I had to use some of the puppy fabric on the pants, there so Cute!!