Answer:
Perhaps the most important adjective for ballerinas and princesses.
Shorter than my four siblings, but easily the strongest, Sometimes I wear a funny hat.
I am used in most sports, have four holes, come in many different colors and there is a state that shares my name.
I like to take trips and solve problems, puzzles and riddles along the way. I am never alone because my monkey friend will always accompany me. Who am I?
A white field, and when it is plowed, its soil is black.
My days are numbered. What am I?