From GameWatcher: “Code Vein is out now, and like all major games these days there’s a range of DLC, including a Season Pass – which if you pick up now will immediately give you access to the Code Vein Alternate Mia Set DLC. Unfortunately, however, Code Vein is a Souls-like game – and they have a habit of making their DLC tricky to find.
The Code Vein White Mia Costume location, fortunately, is relatively simple to find and get hold of – especially compared to other Dark Souls-style hardcore action RPGs – but do the problems end there? Is the alternative costume DLC bugged or not working in some way? Let’s have a look.”
Source: N4G PC Code Vein Alternate Mia Set – White Costume DLC location, is it bugged?