You press the shortcut key C to open the character interface and look at the upper left corner. You will find two icons, one of which is "Check to show appearance", which means that after you check it, no matter what you are wearing now, the image of the dress you bought in the ready-to-wear store will be displayed (you need to save this dress as an appearance in the appearance system first); If this item is not checked, the character image shows what the equipment is currently wearing. That is to say, you can decide whether your character image is displayed by buying clothes or returning to the original equipment by checking whether it is checked or not.
If you buy it through a clothing store or through equipment rubbing, you will get the appearance of multiple sets of equipment. Then, all these equipment will be stored in the "wardrobe" of your appearance system (check the "acquired suit" to see what equipment you can change at present).
You can choose to freely match the parts of these equipments, and click "Save Appearance" after matching; Then, when you press the C key and "show appearance" on the hook of the character property interface, your character image will show what you saved in the appearance system before. If you are not satisfied with the current image, you can enter the appearance system, replace other equipment and save it again. If you don't want to display these appearances, uncheck them and the device will be displayed as it is.