Answer:
I only exist when you are here. Where you never were I can never be.
What dress does everyone have, but no one wears?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
In many hall ways you would stand if not with me in hand.
My first is high my second damp my whole a tie a writer's cramp.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.