Hi Robyn,
You will want to practice whatever style you choose the prom. That is if you are not going to a hairdresser to have your hair done.
Not knowing your hair... but from the length and thickness I suggest you wear part of it up and the rest down, maybe something like Gwyneth Paltrow in
Shakespeare in Love There are tips on using rollers such as hot rollers
Here and
Here Use a gel or mousse on your hair before you dry it to help keep the curl. Use hairspray on it before you put in rollers.
Just a few tips.
Have a great time at the prom
:music: