Both fillies are owned by the Niarchos family and have impressed this season, with the unbeaten Albigna most recently landing the Group Two Airlie Stud Stakes over six furlongs at the Curragh in June.
Alpine Star has won the last two of her three starts and is also a Group Two winner, in last month’s Debutante Stakes over Sunday’s seven-furlong course and distance.
Watch how Albigna landed the Airlie Stud Stakes
Harrington told irishchampionsweekend.ie: “Only one of them will run. Right now, I think Albigna is the one who will. They are two wonderful fillies, and it’s a pleasure to train them.
“Alpine Star has only the three runs, and Albigna only two. They’re still learning. I’m delighted with them both.
“Albigna has been great since her last win at the Curragh. I’ve just watched her work there, and she looks like she is getting stronger.
“I’ll talk to connections before Sunday, but it’ll be one of them taking her chance, probably Albigna. Both are doing very well.”
Select any odd to add a bet