Big hair is very on trend as seen in the AW13/14 shows. Here is how to achieve the look from one of the shows.
Apply mousse through the hair and blow dry roughly. Spritz the hair with a light weight spray and then take one inch sections and tong with a 13mm tong and then pin the curls as you go along. Leave hair in while doing your make up or for as long as possible. Take pins out and brush through hair with a paddle brush. Smooth out the top part of your hair with a tiny amount of styling cream. To create extra volume tease the hair.