Why pure-racial stuff? Why not daedric curse/blessing? Secret daedra cult where members must practice nudism to get Daedric Prince Blessings? (Or Mad God's prank curse).
There is Dibella, goddess of beauty and love (rather carnal), her servants only pretty women. Google for "sacred prostitution" to get better ideas.
In TES universe, there are no "elves", or "dwarfs". They all are "-mer". Dunmer, Altmer, Bosmer, Orcimer, Dwemer.
Skyrim is a rape of the TES lore.
Skyrim cold climate makes nudism stories not very plausible. Vvardenfell island or at least Cyrodill looks much more comfortable.
Dovahkiin might really like "Lady Godiva" story.