I would not advise it. They want to see your face and personality without distractions. After you are hire they might suggest themsef to wear it to keep with the store culture or give you a free hand to wear whatever you like.
Why not! If you like it &it looks good! It might give you an edge over the competition &boost your own confidence! Do whatever makes YOU happy!
I think you could but you would look more serious if you didn't
