How do i get this hairstyle?

First, wash hair. Then, while hair is damp, apply a texturizing mousse, like Garnier Fructise Surf Hair Texture Paste. Blow dry hair. Next, use curlers (NOT a curling iron!) to make loose, easy curls. Take out curlers. Spray curls with style-holding hair spray. Run your fingers through your curls. Voila, you have Jessica Alba hair.