 In her three-year-old season, the filly again beat her male counterparts in major races.She finished second to Prince Rose in the Grand International d'Ostende at Hippodrome Wellington in Ostend, Belgium, a race her sire Le Capucin won in 1924.After winning three Group One (today) races in France, including the Prix de Diane, in October Pearl Cap defeated Prince Rose at Longchamp Racecourse in Paris when she became the first filly to ever win the Prix de l'Arc de Triomphe.