Keira Knightley looks great with any hair style. Her signature style is the long blonde curly hair style.
Pictured here, Keira is wearing a dark blonde color with long curly ends. The hair is kept smooth all the way to about 3 inches from the ends.

Jessica Alba is also wearing a curly hair style, but she has corkscrew like curls that start about chin level and go down.
Various highlights and lowlights give her hair style added dimension.