Peeping Fawn took her revenge on Light Shift with a comprehensive victory in the Darley Irish Oaks at the Curragh.
Aidan O'Brien's filly had been beaten half a length by Henry Cecil's charge in the Vodafone Oaks but made no mistake this time in the hands of super sub Johnny Murtagh, who replaced Kieren Fallon after he was forced to give up his rides following a fall at Longchamp.
Leading a furlong out, Peeping Fawn (3-1) bounded away from Light Shift (9-4 favourite) to win by three and a half lengths. All My Loving (5-1), also trained by O'Brien, was third.
Two of John Oxx's three runners, Four Sins and Athenian Way, made the running, with Ted Durcan settling Light Shift in fifth.
Four Sins still led the field turning for home as Light Shift came with a promising run, although she was being stalked all the way by Peeping Fawn.
Murtagh unleashed his mount at the furlong pole and Peeping Fawn - clearly relishing the heavy ground - settled the issue in a few strides.