Answer:
During the 1800's these turned women into hourglasses and is becoming more popular again these days
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
It is sometimes known to have silver linings.
What goes with a car, comes with a car, is no use to a car but a car cannot move without it?
What is never used unless it's in a tight place?
What language does a billboard speak?