What you will need:
Small Barrel Curling Iron or Ringlet Curlers
Step 1: Brush your hair and make it smooth. Part your hair down the center, letting your hair evenly hang on each side. Spray the part with hairspray. Now using large clips section out your hair, and clip the top parts of your hair up so you can work layer by layer.
Step 2: Grab a 1 inch section of you hair and wrap it around the curling iron or curler. If using a curling iron, a good way to keep the ringlet solid, is to apply a little bit of hairspray to it while its on the iron. Continue to work around the base of your head until the layer is complete. Apply some more hairspray to it. Now unclip the excess hair and section out a new layer. Repeat this step till it is all curled.
Step 3: Now that all the curls are completed, apply another quick layer of hairspray so the ringlets stay in place. Finish off the look by perfecting your part and work with any stray curls. If you want to go for Hermione's more or less laid back look, leave some strands of hair less curled than others. So there is some curls but not like Shirley Temple.