How to get Hilary Duff's hair style?

this is what works for me to do a style like that. put in a smoothing cream to tame your frizzies, then gently straighten it (its ok if its not perfect). to get the curls to last when you take a peice of hair to curl it, spray it with hairspray then continue to wrap it around the barrel. then spray it again. it may get crunchy but it lasts! then when your done shake your head and shake your hair out a little bit so it can fall naturally and look more like hers