curly edges!

Hi Folks, I've been in the sunny Caribbean for a week now (my new home!) and so haven't done a great deal of knitting....but will get back into it soon! Because I'm impatient, I've done the crochet edging around the neck line and the bottom on Bella (I'm doing the cropped version) and whilst it looks very very pretty, it is all curly (ie the knitting hasn't straightened out to lie flat). Is this normal and will it lie flat when I've blocked it when the whole thing is done?