Natagora made every yard of the running to secure a thrilling success in the stanjamesuk.com 1000 Guineas at Newmarket.
Trained by Pascal Bary and ridden by Christophe Lemaire, the 11-4 favourite stuck her neck out gamely when strongly pressed inside the final furlong.
James Fanshawe's Spacious threw down a very serious challenge on the run to the line but Natagora found extra to repel the 11-2 chance, while Jim Bolger's Saoirse Abu rattled home for third.
Lemaire wasted no time in sending his mount to the front and set an honest pace at the head of affairs as Muthabara kept close tabs on the leader.
Natagora quickened things appreciably at around the quarter-mile point as Infallible emerged from the pack with a strong-looking charge under Jimmy Fortune.
That Cheveley Park Stud-owned filly was closely pursued by Spacious, wearing connections' first colours, as Nahoodh also began to come home with a wet sail.
Unfortunately, the latter had nowhere to go in behind Natagora as she found her route blocked, but the winner proved ultra-game in front and found more when it was required inside the final 200 yards.
Spacious would not give in but could only get within a half-length at the line, with Saoirse Abu claiming a close-up third.
Lemaire told Channel 4 Racing: 'I can't believe it.
'I had so much confidence, the only thing for me was to try to get a good position without using too much energy.
'She gave all she had and is a fantastic filly.'
Bary had suffered torment in this race in 2003 when Six Perfections found any amount of trouble in running, covering most of the Rowley Mile before flashing home just too late to collar Russian Rhythm.
Clearly elated, the Frenchman said: 'She has done something fantastic. They all came to her, but she ran to the end.
'She is a fantastic filly. I have dreamed about this since last October.
'She is very brave and she moves very well, even when she is in front she doesn't pull or anything like that.'
Fanshawe said of Spacious: "She ran very well, Jamie (Spencer) just thought she could have done with a stronger pace.
'We are not thinking of the Oaks, we'll stick to a mile at the moment.'
Bolger was happy with his two runners as Lush Lashes also finished with a flourish to take sixth.
The County Carlow trainer said: 'I am very happy and both Kevin (Manning on Saoirse Abu) and Kerrin (McEvoy on Lush Lashes) said they wanted a bit further.'
John Gosden's Infallible had every chance in fourth and her trainer said: 'The winner set the standard on form and it is just a pity, like in the 2000 Guineas, that they have gone to the stands rail.
'She gets the mile and will be going for the Coronation Stakes.'
