hey :-) i know it's strange, but as soon as you said "ash blonde hair" i thought of this haircut i loved from this model on a pacsun bag haha!
anyway i took a picture of it with my phone...i hope this works here's the link:
https://uwc.webmail.optimum.net/attach/0831102019.jpg?sid=&mbox=INBOX&charset=escaped_unicode&uid=12536&number=2&filename=0831102019.jpg
it's straight, full + wispy bangs, and keep your hair long and simple waves. it's gorgeous, easy-to-manage, feminine, romantic, versatile, laid-back...perfect!
if you have straight hair, all you would need to do is use a wavy-making spray or mousse you apply to wet hair and when it dries, it's effortlessly wavy! you can get this at any drug store or supermarket like walgreens.good brands are garnier fructis, john frieda, and bedhead :-)
if you have naturally wavy hair, perfect! your natural hair will be easy with this, just possibly straighten your bangs. to do this, when it's wet use a round brush to dry with a blow drier, and when it is pretty dry use a straightener to clean it up :-) for xtra oomph with your waves, use john frienda finishing creme!
so there you go...hope i was helpful! :-D