This is a great example of how you can get a 1920's faux wavy bob even when you have long hair!!!
She has a side part with one side slicked back close to the scalp. The other has the bangs pulled over and then waves are created like a Marcel Wave. A crimper could be used here or a flat iron would work as well. The back is pulled up into an updo and the side with the bob-look has some creative placement and strategic planning.