Jessica Alba Retro Updo at the Armani Hotel Milano Opening

Actress Jessica Alba attends the Armani Hotel Milano Opening on November 10, 2011 in Milan, Italy. (Getty Images Europe)more pics Jessica Alba Jessica Alba brought back the Marcel wave for an evening at the Armani Hotel Milano. Her sexy, old school 'do paired with her dramatic shimmering bronze shadow and nude lips all worked together to created an elegant and surprisingly modern effect.

Begin by making a deep side part and comb hair straight down on both sides. The Marcel wave is formed by taking a medium-barreled curling iron and clamping down vertically on hair near the scalp while taking a hard rubber comb and laying the teeth directly on the scalp right under the iron. Keeping the comb's teeth in contact with the scalp, gently tug tresses away from the face to create a backwards 'c' formation.

The next step is to move the curling iron and comb down to where the 'c' ends. Repeat the process, only slide the comb forward to create a normal 'c'. Keep working your way down sections the width of the iron, making backward 'c', normal 'c', backward 'c'...When you've waved all the hair, collect tresses in side ponytail behind one ear, twist and pin into place. To ensure your waves are maintained, spritz on a generous amount of hairspray.

We've spotted other celebrities with a similar look, including Taylor Swift, Dita Von! Teese, and Jessica Alba. Check out all 53 pictures in the Retro Updo Lookbook.

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