You may even already be familiar with this method.

Notice how Kidmans waves start just above her ears, then taper off before the ends of her hair.

This look is easily achieved at home by putting damp hair in two braids before going to bed.

Image may contain Nicole Kidman Blonde Hair Person Adult Face Happy Head and Smile

Arturo Holmes/Getty Images

When you wake up, undo the now-dry braids, and reveal your own mermaid-esque waves.

Obviously, depending on your hairs texture and length, we cannot guarantee a Nicole Kidmanlevel wave.

But its still a handy technique to keep in your back pocket.

Nicole Kidman

James Devaney

Nicole Kidman

Patricia Schlein/Star Max