The first time I saw these pictures, I thought her hair was awful. It was way over the top with tons of layers. Then I looked at it from another angle and it's such a modern twist on the big hair of the '70s!
Curling the ends of her hair draws the focus to her layers and the light blonde highlights adds depth to her bangs.
The best way to get volume is to get a haircut with lots of layers.
After you wash your hair, rub mousse in your hands and work it through your roots. Tease the crown of your hair by backcombing with a fine tooth comb. Blow dry your hair using a large round brush. (The larger the brush, the bigger the curls.) Wrap your hair lightly around a curling iron for more defined curls. Spritz the curls with a texture spray and lightly scrunch them.