French runner Lazzat held disconnected Satono Reve to contradict Japan a first triumph astatine Royal Ascot.
James Doyle was victorious aboard nan 9-2 winner, trained by Jerome Reynier.
The jockey and winning owners Wathnan Racing, who besides had nan third-placed equine Flora Of Bermuda, were celebrating a double connected nan time aft nan earlier triumph of Humidity successful nan Chesham Stakes.
Favourite Satono Reve was bidding to go nan first Japanese-trained victor astatine nan gathering aft 12 erstwhile attempts but was beaten by half a length.
As Doyle celebrated aft nan line, Lazzat unshipped his jockey and ran loose astir nan Ascot way earlier being caught.
Rebel's Romance won nan Hardwicke Stakes to springiness Godolphin trainer Charlie Appleby his first triumph astatine Royal Ascot since 2022.
It was an eighth top-level Group One triumph for nan horse, ridden by William Buick.
"He was nan equine we needed. I'm conscionable gladsome to get 1 connected nan committee successful nan end," said Appleby.
Appleby's 6-4 favourite Treanmor had earlier vanished 5th down victor Humidity successful nan Chesham Stakes and Rebel's Romance was his past Ascot runner of nan week.
The globetrotting Rebel's Romance added Royal Ascot to an awesome CV which has brought large victories successful nan United States, Dubai and Hong Kong.
At 7 years old, he is oldest victor of nan title for much than a period and adds to profession net of much than £10m.
"We had 1 shot, 1 rotation of nan the dice near and what a partner. He's a dream equine - I'm blessed," said Buick.
"We gel together - he's my champion friend."
The 6-4 favourite vanished clear of Al Riffa pinch 3rd spot going to Ghostwriter, who was bought by Kia Joorabchian's Amo Racing for £2m this week.
In a week erstwhile temperatures reached 30C, Humidity was an aptly named victor of nan Chesham Stakes.
The 4-1 shot, nether James Doyle for trainer Andrew Balding, provided a 4th victor of nan week for owners Wathnan Racing.
A relative of 2022 victor Holloway Boy, Humidity was bought by nan Emir of Qatar's Wathnan squad pursuing a winning Newbury debut successful nan Cheveley Park Stud colours.