Jet Setting has been supplemented for the Qipco 1000 Guineas at Newmarket on Sunday.
Bought out of Richard Hannon's yard for 12,000 guineas after failing to win as a juvenile, she is unbeaten in two starts for County Kildare trainer Adrian Keatley this year.
The most recent of those was when she made all of the running in the Guineas Trial at Leopardstown, relishing the soft ground.
And the fact Newmarket has rain forecast was a contributory factor to her addition in the field.
Keatley said: "There are a couple of new investors in the syndicate (Equinegrowthpartners) and the lads were keen to supplement.
"It's raining at Newmarket at the moment and the ground looks like being on the easy side.
"It's not a case of that she has to have it (soft ground), it's more a case of what the others can't do in it.
"She's very effective on the soft, more so than the others."
Jet Setting is one of 17 fillies going forward for the Classic, which include the hot favourite Minding.
Aidan O'Brien's three-year-old has not been seen in public since demolishing her rivals in the Fillies' Mile in October.
O'Brien could also run Ballydoyle, winner of the Prix Marcel Boussac, and Alice Springs, who was third behind Jet Setting at Leopardstown.
John Gosden's Nell Gwyn winner Nathra, second to Minding in the Fillies' Mile, and Mark Johnston's Cheveley Park winner Lumiere head up the home defence.
Richard Hannon's Illuminate, Brian Meehan's Blue Bayou, Jim Bolger's Turret Rocks and the Criquette Head-Maarek-trained Midweek are among the other major contenders.
