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Score one for the flat-iron team.

In the great Curling vs. Flat Iron Debate, we find yet another reason to love the multi-purpose straightener. We've already proved it can hold a curl, but did you know it can create a glamorous retro look worthy of both old Hollywood and modern-day screen sirens? Beauty blasphemy, you say? Feast your eyes on the video above.

E! Style Collective member and celebrity hairstylist Laini Reeves shared her modern technique on how to create classic pin curls—a style beloved by starlets from Greta Garbo to Blake Lively.

ESC, Pin Curls Split

Eamonn McCormack/WireImage,Manny Carabel/FilmMagic

Required materials:
Flat iron
Bobby pins
Boar-bristle brush

The process itself is surprisingly simple, according to the hair guru, who's worked with celebs like Emily Blunt and Amy Adams. Start with a two-inch section of hair. Around eye level, begin wrapping the section around two fingers, making sure to tuck the ends inside the curl. After removing your fingers, clamp the flat iron on the curl for 10 seconds. Secure the curl in place with a bobby pin. Repeat until you've done the whole head.

Once the hair has cooled, you can begin to unravel the curls, starting from the bottom and working your way up. As you brush out the hair, twist the sections for a natural-looking curl. Hairspray and finito—instant red-carpet-ready pin curls you didn't have to sleep in to get.