For last night's New York City premiere of Arthur, actress Greta Gerwig shined in an elegant, draped Narciso Rodriguez gown, and her bold orange lip color — Nars Heat Wave lipstick ($24) — along with her loose, wavy "undo" provided the perfect complements. The man behind the undo, Seiji for Sebastian Professional, crafted the look to work for the red carpet, as well as the afterparty. Find out how to copy Greta's casually glamorous hairstyle (using products from the Sebastian brand) when you keep reading.
