The first step to getting long wavy hair is to grow your hair long, but if your tresses are already near waist length, then this idea might work for you. Rather than using a heat tool to create waves, I simply braid my hair after getting out of the shower and then keep it in all day and night. The next morning I take out the braid, apply a bit of Yves Rocher Monoi oil, and then brush out my hair. This is my favorite low maintenance way to achieve waves in my flowing tresses.
So if you have never worn your hair in a braid overnight, why not try it out to see how this works.
The video illustrates how to create a long wavy hairdo with a braid.