Alpha Centauri bounced back to her best to win the Tattersalls Irish 1,000 Guineas at the Curragh.
A Royal Ascot runner-up last season, she was beaten a long way on her only run this campaign in April.
Back on good ground, however, she reeled in long-time leader Could It Be Love to give Jessica Harrington a Classic success to go with her Cheltenham Gold Cup win of last year.
Colm O'Donoghue was on board the 12-1 shot, while the heavily-backed 5-4 favourite Happily could finish only third.
Jessica Harrington reflects on winning the 1,000 Guineas.— RTÉ Racing (@RTEracing) May 27, 2018
"I've finally got a Classic. This is a dream come true for me." pic.twitter.com/mNjqWnJ3ds