Emily Blunt's "DWP2" nail polishes set the whole mood. 20th Century Studios Want to nail a movie star mani? It’s easier than you think. Emily Blunt’s “The Devil Wears Prada 2” beauty looks absolutely slayed (along with the rest of the cast’s). But it wasn’t all just good skin care and glam. Blunt’s manicurist, Julie Kandalec, recently revealed on Instagram how they collaborated on a dedicated look for her Emily Charlton character, using thoughtfully curated nail colors that felt true to the fictional Dior exec. In one much-discussed scene, Emily is seen wearing eye masks and a stunning Tiffany & Co. aquamarine and diamond necklace set — along with a deep, smoky manicure thanks to Essie’s Always Morphing Nail Polish . Essie Always Morphing Nail Polish Essie “Emily and I explored dozens of shades,” Kandalec wrote, saying they eventually settled on the mesmerizing color, paired with Essie base and top coats for a lasting seal.…