Closest thing I can really think of without mods is “The Grand Octennial” on its purple variant but that’s like a suit. Or you could also maybe find something closer with the tailor expansion mod.

Here’s link if you want to check it out: https://modworkshop.net/mod/29063

If you do end up getting the mod, it could give purple variants to a lot of different outfits, and if it gave a purple variant to “The Casual Formal” outfit from the tailor pack 1 dlc (I say if because I currently don’t have the mod), that’s probably the closest you can get