Beyond Reason is set for an immediate step up to the highest level after dominating her rivals in the Shadwell Prix du Calvados at Deauville.
Having won a Group Three at the track three weeks ago, the Charlie Appleby-trained daughter of Australia was well fancied to follow up switching to Group Two level.
William Buick's mount went straight to the lead and the further she went, the better she looked, ultimately winning with plenty in hand by three lengths.
Appleby said: "William kept it simple and gave her a great ride from the front as usual. It was always the plan to go forward as we didn't think there'd be much pace on and she's obviously gone and run really well. We'll probably step her up again now for either the Prix Marcel Boussac or the Fillies' Mile."
Beyond Reason completed a double in France for Appleby and Buick, with Al Hilalee having earlier maintained his unbeaten record with a narrow victory in a British-dominated finish to the Criterium du Fonds Europeen de l'Elevage.
Al Hilalee was a hot favourite to follow up his impressive racecourse debut at Newmarket's July meeting and while he was keen for much of the one-mile journey, he had just enough in the tank to prevail.
Paul Cole's Goodwood maiden winner Duke Of Hazzard was just touched off in second, with Tom Dascombe's previously unbeaten colt Great Scot flying home from the rear to finish a close-up third.
Appleby added: "We went forward and William said afterwards that probably isn't the way to ride him, but we felt we needed to go forward from where he was drawn.
"He was the least experienced of the first three home having only had one run and he stuck at it well. We could bring him back to France for the the Prix Jean Luc Lagardere, or we could look at races like the Autumn Stakes and the Royal Lodge."
Appleby and Buick looked to have a chance of completing a treble in the Group Two Shadwell Prix de la Nonette, but after making the running on her first appearance since last November, Hadith weakened to finish last of seven runners behind Castellar.
The William Haggas-trained Give And Take and David Simcock's Mrs Sippy also finished unplaced.
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