Is there a console command for PC, that will force a follower to equip an item? Brelyna won't equip the circlet and robes I enchanted for her, and she had none to begin with, so it's not like she won't switch out for new ones, she doesn't have anything else to put on her head, and no other robes to wear (except the ones she comes with, that you can't take from her).

Now she DID equip the ring, necklace and gloves I enchanted for her, she just won't equip the circlet or robes. Everything is enchanted with mage stuff. +magicka or +magicka regen or a specific school of magic.

There are mods on the nexus that let you take their stuff so you can force them to wear what you like.

Get max sneaking and just take off the stuff she's equipping instead of what you want her to wear.

If you are on PC, you should use the CK and create an outfit, which essentially is a set of clothing and change your companions outfit to one that you have created. This is how I resolved my wife's default clothing anyway.