Andre Fabre has hailed Golden Lilac as the best filly he has ever trained in the wake of her shock win over Cirrus Des Aigles in the Prix D'Ispahan at Longchamp on Sunday.
Making her seasonal reappearance, the daughter of 2004 Prix du Moulin heroine Grey Lilas quickened up impressively to beat the Dubai Sheema Classic winner.
Golden Lilac has only lost once in her life, when third to Galikova in the Prix Guilaume D'Ornano last August, a race in which Fabre believes she had genuine excuses.
"It was not a discovery to us to see her go and win like that, I was very confident," said Fabre. "The race she lost last year she was a very sick horse when she returned.
"She's the best filly I've ever trained, no doubt about it.
"The only option she has at Royal Ascot is the one over 2000 metres (10 furlongs), the Prince of Wales's Stakes, as I wouldn't want to take on Frankel over a mile in the Queen Anne.
"It looks like the Irish horse (So You Think) would be her main danger in the Prince of Wales's."