Share 'recommendations for the "bigger" dogs?'

...as in, bigger compared to teacups, bigger than 5 lbs. I've mostly accessorized but really want to get into more clothes, clothes, clothes. My dad works in fashion and we really need to get lots of cute matching outfits together. Any recommendations??? For now, it's trial and error until I can understand my physique and coloring and what works well. Tim Gunn, I need help!