One has won! Delighted Queen celebrates with Beatrice and Eugenie as her horse romps to Gold Cup victory at Ascot

The Queen became the first reigning monarch in history to win the Gold Cup as her dark bay thoroughbred filly Estimate, an 80th birthday present from the Aga Khan and the 7/2 favourite, won the prestigious race by a length today. The Queen's grandson Peter Phillips revealed that Her Majesty was 'thrilled' to have won the race, fulfilling a long-held ambition. Joining the Queen in the Royal box at Ascot were her granddaughters Beatrice and Eugenie who looked thrilled to see the win, with Beatrice leaping up and down as she roared the horse on.