The Look: Mod-ular. The Makeup: The makeup artist Francois Nars's infatuation with all things Warhol was apparent in this retro-inspired look. His brand's Sheer Glow Foundation, Radiant Creamy Concealer and Light Reflecting Setting Powder were used to achieve a flawless complexion, with the cheeks left bare. On the eyes, Nars Duo Eyeshadow in Pandora, Portobello and Key Largo were applied for depth and definition. Nars Eyeliner Pencil in Mambo and Larger Than Life Long-Wear Eyeliner in Via Veneto (black) added impact, in addition to coats of both Larger Than Life Lengthening and Volumizing Mascaras. Bali and Bengali Single Eyeshadows were used to define the brows. To finish the look, Nars applied his latest creation on the lips: the Satin Lip Pencil (in Floralies). The Hair: "She's quintessentially New York; an uptown girl who plays downtown," says the stylist Guido Palau of the teased ponytail, which he messed about before the models walked the runway. We've gone a little bit disheveled to break the precise nature of the clothes. For a textured base, Redken Guts 10 Volume Spray Foam was applied on wet hair, before blasting with a dryer. Next, Palau parted the hair - so far along that it mimicked bangs - then used the brand's Powder Refresh 01 Dry Shampoo, and Quick Tease 15 Backcombing Finishing Spray at the root, to add ample texture and lift. Hair was secured at base to complete the look. The Nails: The manicurist Elisa Ferri applied Zoya Nail Polish in Blossom (an opalescent off-white) followed by a custom blend of three existing shades (Cho, Adele and Olivia). The Product: Nars Radiant Creamy Concealer (available Feb. 15), Light Reflecting Setting Powder (Feb. 1) and the Satin Lip Pencil (March 15) will arrive in stores, and online at narscosmetics.com, next year. The Takeaway: Makeup may be neutral for spring, but a defined brow - whether retro-inspired, like this, or simply filled in - is key.