This mod simply changes the default outfit of all eight housecarls to wear the fine clothes. I felt it suited them better to have the appearance of upper class residents when at home. They keep their original equipment in their inventories so they should be able to equip them when you recruit them to follow you (If they don't automatically equip armour just give/take something in their inventory and their equipment will update or just change cells).
I have also removed the warpaint from Argis (Markarth) and Rayya (Falkreath) to suit their new style, as well given Rayya hair since she no longer wears a hood by default.
This shouldn't affect their behaivour, stats or ability to equip other gear at all.
Installation
Just extract the contents of the zip into your skyrim directory (Usually '\Program Files (x86)\Steam\steamapps\common\Skyrim Special Edition') or install with NMM.
Compatibility
Any mods that change or use 'PlayerHousecarlOutfit' and 'PlayerHousecarlOutfitB' classes in Skyrim.esp may end up overwriting, or being overwritten by, this mod.
Any mod that uses housecarl.esp will also not work alongside this, but simply changing the filename from this mod should fix this.
Some Body/Face/Hair replacers may undo the changes I've made to Argis and Rayya's faces.
Permissions
This mod took very little work so I don't care what you do with it, go nuts!