Queen's Speech ran right away from her rivals in making an impressive debut in the seven furlong juvenile fillies' maiden at the Curragh.

Seamie Heffernan 's mount Joan Of Arc was a non runner so he switched to ride this 11/2 shot who improved to dispute the lead after a furlong.

She took a narrow lead after halfway and powered away from her toiling rivals approaching the final furlong.

The American Pharoah filly had the race in the bag in the final furlong as she kept on well to post a five-length success for Aidan O'Brien. Disco Boots (8/1) took minor honours by a head from third-placed Sunniyra (13/2).

“She was straightforward and she knew her job,” said Heffernan.

“Those American Pharoah's don't mind that heavy ground and it's a big plus when you are in Europe being able to handle heavy ground.

“She's straightforward and she won well.

"She actually felt a bit classy to me so you could probably start her off at a mile (next season). She is sure to get further."

Additional reporting by Gary Carson