Sky Lantern and Integral are just two of the star names among 46 for the Coolmore Fastnet Rock Matron Stakes on 13 September during Irish Champions Weekend at Leopardstown.
Richard Hannon's Sky Lantern won the 1000 Guineas, Coronation Stakes and the Sun Chariot Stakes in a stellar three-year-old campaign.
Integral has progressed through the ranks and was an impressive winner of the Duke of Cambridge Stakes at Royal Ascot.
Some smart three-year-olds are also engaged with Clive Brittain's Rizeena, Lightning Thunder, Kiyoshi and Certify entered.
The home defence is headed by John Oxx's promising My Titania and a strong team from Aidan O'Brien that includes Irish 1,000 Guineas heroine Marvellous.
Duntle, first past the post two years ago for David Wachman, Fiesolana, Purr Along and Flying Jib are others who may fight to keep the prize at home.