Aidan O'Brien and Ryan Moore combined for another Group 1 victory at York on Thursday as Snowfall took out the Yorkshire Oaks.
The daughter of Deep Impact made it four straight victories, with three of those – including a 16-length win in the Epsom Oaks on June 4 – coming at the highest level of racing.
Snowfall also got home by 8.5 lengths in the Irish Oaks at Curragh on July 17, before completing a hat-trick of Oaks victories at York this week.
After settling towards the rear of the seven-horse field, Moore split the lot aboard the star filly and raced away to win by four lengths over Albaflora.
“It felt like it was a truly run race,” the jockey told Racing TV.
“(I was) behind Eshaada and Loving Dream and they weren't able to sustain the gallop from halfway.
“I thought I better just make sure I had William (Buick aboard Wonderful Tonight) covered.
“As soon as I moved on her she was there very quickly and the race was as good as over at the four (furlongs) to be honest with you.”
Snowfall started a very short $1.50 and did it in very good style, with her rider full of praise post-race.
“She felt exceptional today,” Moore said.
“The last two furlongs… there was no real serious question asked – the damage was done in the middle part and she was very great.”
The three-year-old is now likely to head to the Prix de l'Arc de Triomphe on October 4 at Longchamp Racecourse in Paris, France.
Snowfall has now firmed into $3.50 outright favouritism in a star-studded race where she is expected to meet the likes of Adayar, Hurricane Lane, St Marks Basilica, Mishriff and Chrono Genesis.