Classic-winning filly Legatissimo tests her powers against the older generation for the first time in a fascinating renewal of the Sea The Stars Pretty Polly Stakes at the Curragh on Sunday.
David Wachman's three-year-old lunged late to claim the 1000 Guineas at Newmarket in early May under Ryan Moore and was only narrowly denied the Classic double at Epsom, beaten just a short head by 50-1 shot Qualify in the Investec Oaks.
She comes back to an intermediate distance of a mile and a quarter for her latest Group One assignment, but will have to be on her game to see off a quality field.
Wachman said: "She seems well at home, so we'll just have to wait and see what happens.
"She's won over seven furlongs and a mile and was touched off in the Oaks over a mile and a half, so she's obviously pretty adaptable trip-wise.
"I don't think the ground should be an issue. She'd go on most ground and it should be goodish this weekend, which will be fine.
"It's a good race and we'll all know a bit more come Sunday afternoon."
Legatissimo is one of four three-year-olds declared in a nine-strong field, with Pleascach another major contender.
Jim Bolger's filly claimed the Irish 1,000 Guineas before chasing home the Wachman-trained Curvy in the Ribblesdale Stakes at Royal Ascot.
Aidan O'Brien relies on Epsom Oaks fourth Diamondsandrubies, while Tamadhor from Kevin Prendergast's yard is the other three-year-old in the line-up.
O'Brien said: "Diamondsandrubies ran a lovely race in Epsom. She got a little bit of a bump at a bad time in the Oaks but she stayed on well to run a nice race and we've been happy with her since. We think she is a filly that is progressing well."
The only Irish-trained older horse in the race is the unbeaten Brooch.
The daughter of Empire Maker completed a four-timer for Dermot Weld in last month's Lanwades Stud Stakes and big-race jockey Pat Smullen is looking forward to seeing her compete at the top level.
He said: "She's done very well. She's a very consistent mare - she's unbeaten.
"She's come up steadily through the ranks. She's now stepping up from a very good Group Two win to Group One class.
"She's only had four runs, which is typical of the boss (Weld), taking her along nice and steadily.
"The step up to a mile and a quarter will suit. She'd want a little ease in the ground.
"We think a lot of her and she's only filling her frame now. Hopefully she's starting to show her true ability."
A strong British challenge consists of Ralph Beckett's Secret Gesture, James Fanshawe's Ribbons and Ed Walker's Mutatis Mutandis.
