Pristine, clean, fresh-looking hair paired perfectly with Stella McCartney's pre-fall 2015 show. To accompany McCartney's luxurious, wearable pieces that encompassed old-world styles and modern silhouettes and fabrics, Aveda Global Creative Director, Antoinette Beenders, prepped the hair to look gorgeous and healthy, and then styled it into an easy, low-laying ponytail. "Stella wanted beautiful, squeaky clean hair to complement her collection," says Antoinette. "To create this look, we prepped the hair with Pure Abundance™ Style Prep and dried it using a fine-toothed comb. This created a shiny and healthy style which we then gently mussed up…