How do I get my hair curly overnight?

I have thick/naturally curly hair. Does anyone know any way I can get it curly overnight, like after I get out of the shower? I have tried putting it up in braids but the curl usually doesn't stay through the next day. What is the best way to sleep on my hair to get it curly for the next day?How do I get my hair curly overnight?
rollers are uncomfterble id have shower wait till ya hairs 80% dry then put a tiny bit of baby oil in ya palms rub threw hair no much to make it oily on;y a lil bit ti get the wet look. then add mousse, bit a hairspray then do 2 tight braids then spray with hairspray. go to bed wen ya wake up un do them carefully useing a wide tooth comb carefully comb it to seperate it then scrunch with mouse then spray wiv perfume to make ya hair smellin gorgeous.

xxxHow do I get my hair curly overnight?
i used Garnier curl mousse%26amp;%26amp;it works really good.
Try rag curling it that is always cute. You could scrunch it. Try braiding it really tight. I would try rag braiding it first. Google search on how to rag curl. It is very cute in a half up half down ponytail.
Well i usually sleep in a french braid then take out n the morning, it works for me. i just put some gel and hairspray to make it stay all day. since thats doesnt work for you, i would suggest curlers.
try foam rollers. seriously. I have long straight thick hair and the foam rollers (when rolled after a shower) really keep a curl. And the curls are like ringlets. It really works.
try using hair rollers
i always used sponge roller, they worked great and i have super straight har, it was really long to :( i cut it all of))
try roller setting your hair when its damp with the following hair rollers



http://www.oliviagarden.com/nitecurl.htm



they are soft and very comfortable to sleep in, However you should tye a triangular net around them to keep them in place while you are sleeping
foam rollers or scrunch it before you got to bed and use hairspray and gel like you were fixing it to go out right them and go to bed. At least for me I wake up and it is still curly.
You have to put rollers and hair spray
Roll up your hair nightly with plastic rollers with the smooth barrel. Then wrap a scarf around your head to hold the rollers in place. To make the curls last all day to the evening apply a setting lotion or gel to wet hair then roll it up.