29-year-old , and her horse valegro , who won the world title in lyon last year , recorded a score of 85.414 percent to finish clear of dutchman edward gal .
the 29-year-old , and her horse valegro , who won the world title in breaking her own world record last year , but there was no wiping the smile off dujardin 's face .
british world dressage champion charlotte dujardin won the grand prix at the world cup in las vegas .