Answer:
Although a human shape I wear Mother I never had; And though no sense nor life I share in finest silks I'm clad. By every miss I'm valued much beloved and highly prized; still my cruel fate is such by boys I am often despised.
When you stop and look you can always see me. If you try to touch you cannot feel me. I cannot move but as you near me I will move away from you.
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
Without me everyone would lose their head. What am I?
I hop around and deliver eggs at Easter.
No matter how little or how much you use me, you change me every month.