Minding overturned her highly-regarded and better fancied Aidan O'Brien stablemate Ballydoyle to grab Group One glory in the Moyglare Stud Stakes at the Curragh.
Joseph O'Brien tried to make all the running over the seven furlongs and looked like doing so until Minding (15-2) ranged up alongside to lead in the final half-furlong.
Minding galloped on strongly for Seamie Heffernan as she got revenge on 5-4 favourite Ballydoyle who had beaten her two lengths in the Debutante Stakes over the course and distance three weeks ago.
Alice Springs (20-1) was third to complete a clean sweep for the O'Brien contingent.
