The jury is still out on whether we should all be copying Emmy Rossum's crimped braid crown, but her floating nail art mani and to-die-for Van Cleef and Arpels ring grabbed everyone's attention in the best way possible. Butter London Global Colour Ambassador Katie Jane Hughes gave us the scoop on Emmy's surprisingly simple manicure.

To prep the nails, Hughes used a coat of butter London Patent Gel Flawless Base Coat. For the half moon and floating French tip, Hughes applied butter London Nail Lacquer in Union Jack Black at the base and tips of each nail. To finish the look, she applied a coat of butter London Patent Gel Flawless Top Coat to prevent chipping and add shine.

At last night's New York premiere of "Edge of Tomorrow," Emily Blunt wore a side bun that was as simple as it was elegant. Paired with her red Prada column gown and pink lipstick, the look reminded us just how much we missed seeing the new mom on the red carpet. To get the look, follow hairstylist Laini Reeves' step-by-step guide.

Reeves first prepped Blunt's wet hair with René Furterer Vegetal Mousse, blowing it out with a soft-bristle flat brush for a smooth finish. Next, she misted the hair with René Furterer Vegetal Finishing Spray and brushed the hair into a low side part before securing into a ponytail at the nape of the neck.

Reeves then sprayed the hair with more finishing spray for hold, and smoothed pesky flyaways with René Furterer Styling Wax. Before twisting the hair into a bun, Reeves back-combed the side pony for added texture, which also made the hair easier to secure. Once Reeves create the bun, she secured it with bobby pins and applied the finishing spray one last time for extra hold.

Eva Longoria paired a classic smoky eye and nude lip with a nude Vionnet gown and a trendy fishtail braid at the Cannes Film Festival premiere of "Foxcatcher."

To get the perfect smoky eye, L'Oréal Paris global makeup artist Karim Rahman used L'Oréal Paris Colour Riche Eye Shadow Quad in Cupa Joe, $7.95, onto the lids. After lining the upper and lower lashline with L'Oréal Paris Never Fail Eyeliner by Infallible in Black, $8.48 and smudging slightly for a softer look, he applied L'Oréal Paris Voluminous Million Lashes Mascara in Black, $8.95. On her lips, Longoria wore L'Oréal Paris Colour Riche Extraordinaire Lip Colour in Nude Ballet, $8.95.

To copy the actress's cool, messy braid, prep hair with a root boosting spray and create a side-swept fishtail. Then, mist it with a dry texturizing spray and rub the braid between your hands to give it an undone look.

At the opening ceremony of the 2014 Cannes Film Festival, Blake Lively set the bar high -- like really, really high. Her smoky eye and slicked-back, braided ponytail combo was the perfect complement to her burgundy Gucci gown and Lorraine Schwartz earrings. Even Upper East Side It girl Serena van der Woodsen would have been jealous.

The L'Oréal Paris spokesmodel's makeup can be recreated using just four of the brand's products. Start by blending L'Oréal Paris Colour Riche Eye Shadow Quad in Cupa Joe, $7.95, across the lids, using the darker colors at the crease. Next, line the upper and lower lashline with L'Oréal Infallible The Super Slim Liquid Eyeliner in Black, $8.95, and finish with L'Oréal Paris Voluminous Million Lashes Mascara in Black, $8.95.

Complete the look with a coat of L'Oréal Paris Colour Riche Caresse Wet Shine Stain in Lilac Ever After, $9.95, on your lips, and -- tada! -- you're Blake Lively. We can dream, right?

At last night's Los Angeles premiere of "The Other Woman," Kate Upton ruled the red carpet in a sparkling gray strapless Dolce & Gabbana dress and plenty of glittering jewelry to match. And while we loved all the bling, we couldn't stop staring at her voluminous updo by celebrity hairstylist Peter Butler.

To create the look, Butler evenly applied three dollops of Leonor Greyl Mousse au Lotus Volumatrice throughout Upton's hair. While blowing it out with a paddle brush, he sprayed Leonor Greyl Spray Structure Naturelle, concentrating on the front roots for more volume.

To get even more texture, Butler divided the hair into sections and used a large barrel curling wand, adding a spritz of Leonor Greyl Éclat Naturel. The result was a cool, almost wet look.

Then, he pulled Upton's hair back into a low ponytail, wrapped it into a bun and secured it with hair pins. To ensure the textured look would stay all night, Butler set the hair with Leonor Greyl Laque Souple before the star hit the red carpet.