Split your hair down the back of your head to create a left section and a right section. Then, divide these into top and bottom sections. Clip the top section out of the way.

Starting on the bottom section, curl your hair with a one-inch wand or curling iron. Alternate between curling your hair away from your face and toward your face. Roszak says this keeps the waves from looking too polished and done. Pro tip: She says to leave the ends of your hair out of the curling iron to give your tousled hair a piece-y finish.

Once you've finished the bottom section of one side, let the top section down and use the same curling technique. Repeat with the remaining sections.

Just kidding, this early 2000s prom look is not the final style. But when you're done curling your entire head, it will look something like this -- so don't freak out that your wavy hairstyle is more beauty pageant than bed head at this point.

Now, you're going to deconstruct all those curls you just made.

Mist your hair with the wave spray you used earlier, then use your fingers to break apart the curls. Roszak adds that using a wet wave spray allows you to really shape your hair and create that tousled effect. (It also keeps your hair from poofing up.)

Focus on pulling the curls down to loosen them, and pulling them apart to get that rolled-out-of-bed, tousled-hair look.

Spray dry shampoo (Roszak used L'Oreal Paris Hair Expert Extraordinary Clay Dry Shampoo, $6.99) on your roots for extra volume. We also like Sachajuan Dry Powder Shampoo, $35. Dry shampoo doubles as a dry texture spray, and Roszac recommends lightly spraying it over the rest of your hair as well, then running your fingers through your hair again.

This is different than the wave spray because it adds texture and a bit of hold, whereas the wave spray allows you to mold and shape your wavy hair.