Then Moses took some of the anointing oil and of the blood that was on the altar and sprinkled it on Aaron and his garments, and also on his sons and his sons' garments. So he consecrated Aaron and his garments, and his sons and his sons' garments with him.
Leviticus 8:30

Those beautiful, new priestly garments were permanently stained with blood and oil as soon as the first priests assumed their office. In part, this tells the priests they shouldn't be afraid to get dirty when necessary in the course of their work. It also tells us that the beauty of the garments wasn't their primary purpose. They were functional as well as costly.