Great Gatsby Party Outfit /hair help

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I was invited to the Great Gatsby Party in NYC Friday. The attire is flapper for women and guys are black tie. I ordered a dress and bought these shoes but I'm not sure what to do with my hair or makeup

My hair is pretty long and thinned out so I'm not sure what to do with it lol. help!

I also got the headband on the left. Any ideas are welcome!