Kate Hudson has a wavy long hair style that features long layers and a center part.
Create this style by applying a styling cream throughout the hair. Then blow dry the hair using a large round brush
Apply all over waves using a curling iron or flat iron (if you are experienced)
This is a classic long hair style that will always look good. You can wear this hair style curly all over, straight all over, or add side-swept bangs and highlights for variations.

Mariah Carey has a similar hair style, but she has many more layers added for a fuller look. She has an undefined part with side layers swept off her face.
The blonds color and highlights suit her skin color and eye color well.