There's ahttp://www.nexusmods.com/fallout4/mods/745/?that allows you to wear outfits as if they're under-armor pieces. There's a lot of clipping due to all the extras the outfits have.
Check out this mod, if you are on PC... http://www.nexusmods.com/fallout4/mods/745/?
Jinx Mikedzines!!
are ther any other outfits like the vault suit that have stats? im sick of this blue thing but it provides a small bonus to defense which the military fatigues ect dont have.
I like the way they did it but not allowing the armor to cover all protective clothing was a mistake. I can understand a dress not using leg armor, but some of the protective clothing looks really cool and would look even better with armor. I mean you can't even mod most protective clothing so I don't think it would be OP to wear armor over it.
Funny the road leathers look pretty bulky to me. Guess they ran out of time or just didn't think it was a priority. Hopefully someone makes layered veteran ranger armor with the duster that you can wear over top while still having the components visible.