The reason is that viera don't have a "wearing-a-hat" mesh for their hairstyles (or just not released yet?). So any hood or hat which removes hair can work but if it shows hair they just don't allow us to wear it... idk why they need this long to create hair meshes which work because we have like what, 6 hairstlyes? With both genders just 12 with different bangs, like come on, it can't be that hard or take that much time to create the alternative mesh. Really angers me since I have mogshop outfits which I only bought for a hat and now I can't even wear that and we keep getting events with hats we can't even use lmao