Promise To Be True comes home in front under Seamie Heffernan© Photo Healy Racing
Promise To Be True got going late on to take the opener at Tipperary, the Irish Stallion Farms EBF Fillies Maiden.
The Aidan O'Brien trained newcomer was sent off the 2/1 favourite (drifted from 6/4) for this two-year-old contest, and she was settled in rear by Seamie Heffernan.
The Galileo filly was pushed along from the three furlong pole, and was ridden with over a furlong to race.
She was soon switched right for room, and went from fourth to first in last the 150 yards, going on to score by a length. Elizabeth Browning (13/2), who is also trained by Aidan O'Brien, finished second under Ana O'Brien, while Decisive Intent (6's to 4's) was a length and three parts back in third.
Aidan O'Brien said afterwards: "They are nice fillies and she (Promise To Be True) is very well bred. Seamus gave her a lovely ride, was kind on her and she will have learned a lot.
"She wasn't named in time and that's why she hasn't any big entries. Her name wasn't through in time to enter for the Moyglare but she'll step into something like the Debutante now.
"We liked the second going to Naas but she pulled a shoe and we think that is what happened to her. She came forward lovely from that race so we were very happy with that run too."
The winner is a full-sister to Maybe who won the Moyglare Stud Stakes at the Curragh in 2011, and was unbeaten in five starts as a two-year-old.
Additional reporting by Thomas Weekes