Answer:
I am something that floats. But after a period of time I fall.
Its fleece is warm and wooly white. And when you lie awake at night, count it and you'll fall asleep. What is it?
Cows do this to salt and humans do it to ice cream.
Snow White was friendly with seven of them
The famous royal young lady who had several short men following her.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.