How can I make my curls stay?

[mebabygirl86]

This weekend Im celebrating my big 21st Bday

.Im tryna do the curly wavy long layered look.Like a smash of all of these together:

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but whenever I style my hair,the curls fall and tangle.What can I do to keep it up at least for a entire night?

 

[Nox]

 

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