I need professional hair stylist advise?

I have long hair with absolutely NO curl! It is sooooooo hard to keep any style in my hair. I know it has a lot to do with how heavy my hair is because it is so long and thick. I have tried hot rollers, regular rollers, gel, mousse, hairspray, my hair is just stick strait! I want my hair to look lie this picture of lauren conrad. Help is needed... Should I try a body wave?

I have very dark brown hair also.



http://cdn.buzznet.com/media-cdn/jj1/hea鈥?/a>



How would I go about getting this look? I would really appreciate a professional's advise,

Thanks!

hair of the dog