Gina Rodriguez

Photo: Getty Images/Amanda Edwards

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If you want straight hair with some volume...

The tool for you: Straightener, up to 2 1/2 inches wide.

Why: With a really wide straightener, you can smooth out one large section of hair in one pass, Chastain says.

How to get the look: To get a natural-looking texture, Chastain says to "clamp down on the middle of the hair and then just pull it through the ends. Then, curve the ends toward the face so it doesn't get that obviously flat-ironed look."