Fabre claimed the Group One prize with Esoterique two years ago and has high hopes for this year's challenger.
The Godolphin-owned five-year-old won the Duke of Cambridge Stakes at Royal Ascot last year and was a close-up third when defending her crown in June.
She made the most of having her sights lowered when claiming a Listed prize at Maisons-Laffitte a month ago and is set to return to the highest level on the Rowley Mile.
Fabre said: "Usherette will run on Saturday and then hopefully she will go to Del Mar for the Breeders' Cup.
"She has won on all types of ground - it was bottomless when she won in Ascot last year - so that is not a concern.
"She had a nice, confidence-boosting win last time and we are looking forward to running her."
The other French-trained entries among 16 horses confirmed on Monday were Jean-Claude Rouget's Qemah and the Freddy Head-trained Siyoushake.
The home team includes John Gosden's Persuasive and the William Haggas-trained Sea Of Grace.
Aidan O'Brien has left in Alluringly and dual Group One winner Roly Poly.