Undefeated Divine Proportions further staked her claim as Europe's top juvenile filly with a convincing two-length victory as the short-priced favorite in the Prix Marcel Boussac (Fr-I) Sunday at Longchamp.Pascal Bary trains the winner for the Niarchos Family, who won the Prix de l'Arc de Triomphe (Fr-I) later with Bago.Tracking the leaders along the inside into the short straight in the one-mile event, Divine Proportions angled left slightly and appeared to bump Fraloga to gain the lead inside the final furlong for jockey Christophe Lemaire to win with relative ease.Titian Time, who tried to take them all the way, was second, a nose better than Fraloga. Christophe Soumillon, aboard Fraloga, did his best to keep the favorite pinned on the inside and there appeared to be contact when Lemaire decided Divine Proportions could wait no more. Stewards reviewed the finish but made no change.Flaxman Holdings Ltd. bred the bay offspring of Kingmambo-Myth to Reality (Sadler's Wells).Bary won his fifth Boussac and fourth in five years. "She's a fantastic filly," he told Racing Post. "She's won at five furlongs, she's won at six furlongs, and now she's won at a mile. It's difficult to compare different generations, but this filly has never been beaten and each time she wins, she wins more easily."Trainer John Gosden, who saddled Titian Time, called the winner "exceptional" and said she may be the best 2-year-old of either sex. So he was pleased with his filly's effort."She's run a blinder and was beautifully ridden. It's not easy making all at Longchamp, and she's run a stunning race."The final time was 1:36.70 on a good surface. Intrigued finished fourth, followed by Portrayal, Queen of Poland, Gorella, New Largue, Mirabilis and Cours de la Reine.