Petticoat, Surrounding and Vivianite will all line up in the Group Three for the Co Kildare-based trainer.
Godolphin’s Petticoat is the highest rated of the trio but finished fourth behind the reopposing I Can Fly at Killarney last week.
“Petticoat came out of the race really well,” said Halford.
“We just felt things didn’t go to plan the last day so we’re happy to let her take her chance again quickly.
“Surrounding has been a very consistent filly for us for a few years.
“She’s been a great servant and we’re just trying to nick a bit of black type with her.
“Vivianite won well last week in a maiden. Strictly on the figures she’ll have a bit to find with some of these but we’ve been pleased with her.
“Everything is in her favour – the trip, the ground, the track – so if she can get black type we’ll be delighted.
“She’s only three and at this time of year you never know when three-year-old fillies are going to stop improving.
“She looks better now than she ever has so we’re happy to let her take her chance.”
As well as I Can Fly, Aidan O’Brien also runs Irish Guineas runner-up Could It Be Love.
Dermot Weld’s Yulong Gold Fairy was a Listed winner at Galway and is joined in the line-up by stablemate Sorelle Delle Rose.
William Haggas’ One Master and the Mick Channon-trained Dan’s Dream make the trip over from England.
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