But we don't see his clothes either.
I always wondered how in the heck could Angelique see herself in mirrors once she had become a vampire? Maybe she was a bit half-witch/half-vampire and her witchy side enabled her to see herself and use Nicholas' mirror? I'm stretching here, I know.
That whole mirror thing needs to be revamped anyway. I can understand a vampire not have a reflection but the clothing should be there.