The former Corrie actress first showed her love for the screen icon by getting Marilyn's face tattooed on her arm.
And now Helen's posted a stunning Instagram selfie sporting Marilyn-inspired lips and tresses during a recent photoshoot.
Helen's platinum barnet had been styled in retro waves for the shoot, complete with a 1950s-inspired victory roll.
She went all Hollywood with a statement red pout, completing her pin-up look with black winged liner and fluttery false lashes.
And she even gave us a sneak peek of the make-up used in this backstage Instavid:
We spy L'Oréal Professionnel Tecni Art Full Volume Extra Mousse, £10.60, Bumble and Bumble Thickening Hairspray, £21.50, HD Brows Eye & Brow Palette, £19.96, and Yves Saint Laurent Touche Éclat Foundation, £29, plus tons of hair rollers.
Cheers for the beauty snoop, Helen!
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