Mirror Mirror

What?
Yes, my name is Mirror Mirror.
My parents had a sick sense of humor.
The Queen was just plain sick.
When she found out about my skill with poetry, I was dragged to the castle so that I could heap praise upon her beauty.
Well, until that beauty faded.
Then, one day, I caught a glimpse of a beautiful girl walking down the road outside the castle.
“Snow White,” the scullery maid said her name was.
I was left speechless.
The Queen asked me who the fairest of all was.
I answered, and was chained to the dungeon wall.