NEW YORK (Reuters) – Fashion world trendwatchers were validated on Friday when collections by top designers Nicole Miller and Charlotte Ronson exhibited the predicted influences of casual, athletic and leisure wear. Miller, a favorite of professional women for her wearable, stylish and confident designs, ventured into a more playful arena for spring 2013, with a dominant theme of floral prints configured in geometric shapes, and tight leggings in stretch leather or mottled prints. …