The look: '40s-style curls

These sponge rollers will have you looking like your grandmother -- in a great way. A set of foam hair rollers is the easiest way to give short- or mid-length hair that Old Hollywood look. Use them on barely-damp hair, then sleep on them overnight or set with a blow-dryer.

Try: Hot Tools Foam Rollers, $2.49 for 6

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The look: medium-size, casual waves

These strawberry-shaped rollers for hair from Etude House aren't the most comfortable styling tools, and they make you look like an anime character, but the latter might be just the reason that they're so big in South Korea right now. Roll these up to be approximately level with your ears. When you wake up, you get loose, flirty ringlets from the mid-length of the hair to the ends.

Try: Etude House My Beauty Tool Strawberry Sponge Hair Curlers, $4.55 for 4

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The look: volume, volume, volume

If you're after Victoria's Secret-model volume, then medium or large velcro rollers are the ticket. Velcro rollers are awesome for adding more body after a blowout; they can also revive day-old, slept-on waves. To use Velcro rollers, roll up a few sections of completely dry hair and hit 'em with a blowdryer; give your hair a few minutes to cool, then remove the rollers.

Try: Drybar High Tops Self-Grip Rollers, $10 for 6

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The look: professional-looking wet sets

Magnetic rollers, confusingly, aren't magnetic at all; they're just simple, plastic rollers. Wet hair sorta clings to them, but many women need additional security using clips, bobby pins or snap-on covers. These rollers may not be for amateurs, and you won't want to snooze on them, but they're inexpensive and their rigid form gives curls a smooth, consistent look.

Try: Donna Snap-On Magnetic Rollers, $0.99 for 12

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If you have long curly hair or natural black hair, you'll love flexi rods. They're amazing for adding definition to droopy-looking curls or wet-setting hair, and their bouncy/spongy texture makes them a great choice for overnight wear.

Try: Hot Tools Professional Long Spongy Rod Rollers, $7.89 for 10

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