The Queen is set to have her first runner in Ireland when Spinning Top goes for the Pretty Polly Stakes at the Curragh on Saturday.
Spinning Top, runner-up to subsequent Vodafone Oaks winner Love Divine in last month's Lupe Stakes at Goodwood, is trained by Sir Michael Stoute and will be ridden by Michael Kinane.
Lord Carnarvon, The Queen's racing manager, said today: "I'm delighted that the horse runs. I'm also pleased that Michael has agreed to take the ride.
"We've got our fingers crossed and we're hoping she'll run very well."
Jason Morris, racecourse manager at the Curragh, added: "Obviously we're delighted that the horse is coming over.
"It's a historic occasion for the Curragh and for Irish racing."
Bookmakers Coral have eased Vodafone Derby winner Sinndar out to even-money from 4-5 for the Irish equivalent on Sunday following support for Prix du Jockey-Club hero Holding Court and Sagitta 2000 Guineas victor King's Best.
The Barking firm have clipped the former to 11-4 from 10-3 and the latter to 11-4 from 7-2 for the Budweiser-sponsored event.
However, the Aga Khan's colt has been clipped to 5-4 from 11-8 by Ladbrokes, with Holding Court pushed out to 2-1 from 7-4.
The Aidan O'Brien-trained duo Ciro and Glyndebourne have been shortened to 14-1 from 20-1 and 20-1 from 33-1 respectively by the Harrow firm.
Latest Budweiser Irish Derby prices:
Coral bet: Evens Sinndar, 11-4 King's Best, Holding Court, 10-1 Shakespeare, Ciro, 12-1 Glyndebourne, 40-1 bar.
Ladbrokes: 5-4 Sinndar, 2-1 Holding Court, 9-4 King's Best, 14-1 Ciro, 20-1 Glyndebourne, 33-1 Muakaad, 66-1 bar.