clothing fetishism
underwear fetishism
https://en.wikipedia.org/wiki/Underwear_fetishism
https://www.wikidata.org/wiki/Q839072
A sexual fetishism relating to undergarments, and refers to preoccupation with the sexual excitement of certain types of underwear, including panties, stockings, pantyhose, bras, or other items.
underwear fetish
underwear fetishist