Selena Gomez's Shiny Hair Secret from the AMAs

At Sunday's American Music Awards in Los Angeles, Selena Gomez stunned on the Nokia Theatre red carpet when she showed some skin in a very grown-up Giorgio Armani gown with a plunging neckline, scooped back and thigh-high slit.

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To complement her slinky dress, the "Hit the Lights" singer, 19, opted for a glamorous, old Hollywood-inspired hairstyle. Below, find out how to recreate her flawless, shiny "Veronica Lake look" from her hair pro, TRESemme Celebrity Stylist John D.

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Step 1: Prep towel-dried hair with TRESemme 24 Hour Body Mousse ($5.49, walgreens.com), combing the product through for even distribution.

Step 2: Blow-dry hair nice and smooth and create a deep side part for added drama.

Step 3: Take sections framing the face on both sides (from the back of the part, just behind the ear), and curl 1-inch sections using a 1-inch barrel-curling iron (try Solano Smooth Curl 450 Professional, $79; folica.com). Spray each section with TRESemme Thermal Creations Curl Activator Spray ($4.99, drugstore.com) to add additional hold and aid in protecting hair from excess heat.

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Step 4: Curl bangs away from the face and curl the side sections in a horizontal direction, continuing this process on the remaining sections.Note: make sure the sections are even and not too big.This will ensure a consistent curl/wave pattern.

Step 5: After the sets are cooled, spray a boar bristle brush with a finishing spray and brush out the curls until you achieve a desired wave pattern.Make sure the wave hangs just over the eye and finish with more hairspray to keep the look in place!

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