The Joseph O'Brien-trained filly Iridessa has sprung a surprise in the Juddmonte Pretty Polly Stakes at the Curragh.
Wayne Lordan piloted the former Fillies' Mile winner to a two-and-a-quarter lengths victory over Magic Wand in what was the second Group One success of her career.
Pink Dogwood, the well backed Aidan O'Brien trained 11/10 favourite, came in third with Charlie Appleby's Wild Illusion in fourth and the David Lanigan-trained Worth Waiting last of the five.
"She won very well and it was a huge performance. Wayne gave her a lovely ride and the race worked out well for her. I'm over the moon," said winning trainer Joseph O'Brien.
"It was very strong race. There wasn't a big field, but there were some very very good fillies in the race.
"We were hopeful, and confident of a good run from her. The lads at home felt that she was as good as she has been all year.
"Obviously the step up in distance was a big help to her as well.
"It was fairly obvious from her pedigree that she should step up once she went up in trip, but obviously you don't always know that until you do it.
"She ran well here in the Guineas. She had to battle for her position through the race and she still ran on well.
"She seemed to improve as she went on last year and naturally she carries condition and she's strong and hardy.
"That's obviously a career-best again today and she's progressed with each run so far this year."