My yearly Vampire costume!

It's a naughty picture ;)

The idea that vampires don’t have a reflection originated when mirrors were backed with silver, a metal with which vampires had some amount of difficulty. Nowadays we use aluminum and other materials for the reflective surface so vampires should reflect just fine on those.

I know that, it's because silver was considered a pure metal, and as vampires were not pure, it was believed that they were not reflected.