Fallen For You led home stable companion Starscope to give John Gosden a one-two in the Coronation Stakes at Royal Ascot.
William Buick brought the 12-1 shot through with a swooping challenge in the straight to run out a three-and-a-quarter-length winner.
Starscope filled the runner-up spot, with Irish History rounding off the top three.
Favourite Homecoming Queen disappointed when it mattered most after dictating affairs from the off.
Fallen For You made a winning reappearance on the all-weather at Kempton before finishing down the field in a Lingfield Group Three.
With 1000 Guineas heroine Homecoming Queen (9-4 favourite) setting a strong pace, Buick was keen to bide his time.
It proved a wise move as the pacesetters soon faltered.
The trailblazing tactics that were so effective for Homecoming Queen at Newmarket did not pay off in the Irish 1,000 Guineas and she once again faded quickly.
She only beat only two home, and her rider Joseph O'Brien said: "She just didn't fire."
Irish Guineas winner Samitar fared best of the two Mick Channon-trained runners in fourth.
Chris Richardson, managing director for Starscope's owners, Cheveley Park Stud, said: "We're thrilled Fallen For You bounced back to her best.
"We drew a line under her Newbury run as she got upset in the parade.
"What she wants is a strong-run mile as I don't think she stays further.
"We'll see where John goes with his other fillies as she's ground dependent."
Simon Crisford, Godolphin's racing manager, said of third-placed Art History: "We're obviously delighted she's Group One-placed.
"She was a bit unlucky last time at Sandown and she's bred in the blue so it's great."
Mick Channon said of Samitar and the sixth-placed Laugh Out Loud: "We've no excuses.
"I'm pleased enough with Samitar but she was beaten fair and square.
"She's got lot of options and is in the Falmouth.
"Laugh Out Loud has been on the go a while and will have a break."