How would I style my hair like this?

For big soft waves like these, I reccomend cushion style rollers. They look like little pillows and you can get them at Shopper's Drug Mart and probably WalMart as well. Basically, you wash your hair then put the rollers in then sleep on them overnight. Take them out in the morning and spray them before you do anything else. If you have a 2" barrell curling iron you can get the same effect as well.