One trend popped up over and over at the 2013 Screen Actors Guild awards: old Hollywood waves! Let’s see, we’ve got…

My girl Jennifer Lawrence:

Jennifer Lawrence in Dior Haute Couture (Credit: Kevin Mazur/WireImage)

The Impossible‘s impossibly lovely Naomi Watts:

Naomi Watts in Marchesa (Credit: Kevork Djansezian/Getty)

Jessica Chastain, looking like a peppy Jessica Rabbit:

Jessica Chastain in Alexander McQueen (Credit: Kevin Mazur/WireImage)

Not my favorite actress, but still looking pretty fab here — Amanda Seyfried:

Amanda Seyfried in Zac Posen (Credit: Ron Wolfson/Landov)

A smoldering Jennifer Garner:

Jennifer Garner in Oscar de la Renta (Credit: Getty)

And the eternally sexy Sofia Vergara:

Sofia Vergara in Donna Karan Atelier (Credit: Kevin Mazur/WireImage)

Getting beautiful, old-school Hollywood waves is a hell of a lot easier than you’d think.

1) For me, the trick is to anchor the hair with a styling product like volumizing mousse before blowing dry (if you air dry hair, the waves will look beachy, not sleek and smooth).

2) Once hair is dry, use a curling iron or hot rollers and only curl the hair from eye-length and below, keeping the hair around your face straight.

3) For extra drama, create a deep side-part before curling.

4) Once you’ve finished curling, brush out hair, arrange curls, and then spritz with hairspray.

Oh, and it’s neither waves nor beauty, but my favorite head-to-toe look of the night? Marion Cotillard, in a blue and white Dior Haute Couture gown. I think the dress is fun and flirty, and I’m seriously digging the sleek hair, too.

Marion Cotillard in Dior Haute Couture (Credit: Larry Busacca/WireImage)