Kitesurf denied Aidan O'Brien's Magic Wand a Group One success in the Prix Vermeille at ParisLongchamp.
Ridden by Wayne Lordan, Robblesdale Stakes winner Magic Wand appeared to have done everything right when hitting the front a furlong and a half out, with the pace having been made by stablemate Bye Bye Baby.
But just as it looked like the mile-and-a-half prize was heading to Ballydoyle, the Andre Fabre-trained Kitesurf appeared on the scene under Mickael Barzalona to cut her down close home.
The Godolphin-owned four-year-old was building on a Group Two success at Deauville and holds an entry in the Prix de l'Arc de Triomphe back in Paris on October 7.
Lisa-Jane Graffard of Godolphin told www.godolphin.com: "This is a fantastic result for Kitesurf.
"It was a well-deserved win and we always suspected that she was capable of being victorious in a Group One.
"For fillies like her, it is mission accomplished to win a Group One.
"We will see how she comes out of this race, but the Arc, the Breeders' Cup and British Champions Day at Ascot are all possible targets."
Waldgeist just perfect Prix Foy
Fabre then doubled up with Waldgeist in the Prix Foy.
Up against stablemates Talismanic and Cloth Of Stars, Waldgeist looked in a different league as Pierre-Charles Boudot sat motionless entering the final furlong before just nudging him out for an easy victory.
The Godolphin silks were also carried to victory by Brundtland who maintained his unbeaten record in the Prix Niel for Charlie Appleby.
In the St Leger at Doncaster until the 48-hour declaration stage, he made every yard of the running for James Doyle, fending off the persistent challenge of Aidan O'Brien's Hunting Horn.
"He's a hard horse to get a handle on, but he's a tough horse and he's three out of three now," said Appleby, speaking at the Curragh.
"We had him in the St Leger, but we had a team for that and I just thought he lacked the experience for that.
"I haven't seen it all yet, but he's definitely a horse for next year."