There are none. I made a topic about this too. No housecarl will wear the damn uniform. It blows hard. Take her outside and she might put the stuff on but as soon as she gets back into the house and you leave it is back to her commoner's ramen. --- The Empire stole my sweetroll. Free Skyrim or death! Every day I'm shufflin.
That's strange, I'm afraid I'm not sure what to tell you.
I use Lydia as a follower and she has always equipped the highest stat items I give her. The only time I ever had a mild issue was after the companions questline, when she was sent back to my house, replaced temporarily.
When I got back to the house, she was in her common outfit. So I talked to her, asked to trade with her, and saw she still had the full dragonbone set. All I had to do was take the armor back from her, and all the rest of the gear popped right on. I gave the armor back and she wore it. Just needed a little push I guess.
Probably not what you are talking about, but it's my only experience.
Is what you give her better than what she has? Giving her Elven Armor won't really help because it's Light armor. --- I am Thor Odinson of the Vikings, giant. I am not the god of reason and understanding. I am the god of Thunder and Lightning!
Followers wear what you give them, based on if it's better then what they already have. If it isn't they will refuse, and like the one guy said. They may take it off when they go home, but you just have to take it back, and give it back to them they should equip it then. They don't seem to do that with weapons though. Calder, the House Carl in Hjerim ( I think that's how you spell it ) Always kept the Elven Axe I gave him equipped. --- "One minute can decide the outcome of the battle, one hour the outcome of the campaign, and one day the fate of the country"- Field Marshal Suvorov
You on PC? After I installed a set of mods it made companions unable to wear anything but their default. I'm not too worried about it though since I prefer no companions. --- Gnarlacious. I'm So Meta, Even This Acronym