Yes! Clothes!
I never put anything on either of my 2 yorkies that I had before Abby, except a sweater and or coat when it was cold outside. Now I do dress Abby when we go visiting. She has a couple of summer dresses, some sweaters, a few (too many) coats as it gets very cold in the winter here. I got a couple of her things at Petco and Petsmart. We also have a place called Wet Nose that I love. I have never ordered anything for her online....yet
Being only 9 weeks old, I am positive she is still going to grow, so take that into consideration when buying clothes and a carrier. Just have fun spoiling your furbaby.