We can tell that angels’ clothes do not merely look like clothes but really are because they not only see them, they feel them as well. Further, they have many garments that they take off and put on, and they put away the ones they are not using and put back on the ones they are. I have seen thousands of times that they wear different clothes.
I have asked them where they got their clothes, and they have told me that their clothes come from the Lord and are given to them, and that sometimes they are clothed without noticing it. They have also said that their clothes change depending on the changes of their state, that their clothes are radiant and gleaming white in their first and second state, while in the third and fourth states they are somewhat dimmer. This too is because of correspondences, because these changes of state have to do with their intelligence and wisdom, discussed above in sections 154–161.
For everyone in the spiritual world, clothing depends on intelligence and therefore on the truths that constitute intelligence. Although people in the hells do seem to be clothed, because they lack truths their clothes are nothing but rags, dirty and foul, each individual in keeping with his or her own insanity. They cannot be clothed in any other way, either. The Lord allows them to wear clothes so that they will not appear naked.
from Heaven and Hell, Section 181, 182