Blake Lively

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If you want a messy bun...

The tool for you: Curling iron, 1-to-1 1/4-inch barrel.

Why: The right texture is key to taking this popular style to the next level.

How to get the look: Chastain says to alternate the direction of curls throughout your hair with a large curling iron to create texture, making sure to also curl the ends (which will look great once your hair is up). Then, use a texturizing or beach spray and really rough it up before you pull it into a ponytail and twist it up into the bun. You can secure the bun with bobby pins or elastics (preferably both).