The late monarch s four-legged companion scooped the prestigious prize - which was voted for by the public - at Horse and Hound magazine s annual awards in Cheltenham this week.
The Queen was presented with the Buckingham Palace headscarf, which features a number of her ponies and carriages, while at the Windsor Horse Show in 1993.
The Queen s last Stud Groom Terry Pendry stood alongside her favourite horse Emma as her coffin was driven to Windsor yesterday ahead of her committal service.