It’s a sport traditionally associated with mud and manure, but now the equestrian world is finding itself in fashion’s spotlight. Jodhpurs and riding boots are galloping up the style charts, even if some fans of the trend have never set foot inside a yard. Blame Rupert Campbell-Black and his Rutshire set, but the Rivals effect is in full swing. The online retailer Asos reports “a strong appetite for equestrian dressing” among its customers. Its Stable Girl edit features everything from paddock-ready blazers to party dresses adorned with horse motifs. Searches for riding boots on the website are up 260% year