Ralph Beckett reckons Dar Re Mi is the unknown quantity in the Audi Pretty Polly Stakes at the Curragh as he prepares to saddle stable star Look Here.This will be the first time Beckett's filly is back racing against her own sex since last year's Oaks - in which she beat two of her main rivals, Katiyra and Lush Lashes, in handsome style.Beckett said: "I think this is the right race for her. The ground will be good, obviously that's fine. We have run against some of her rivals before, it's only Dar Re Mi who we don't know about."He added: "She (Look Here) finished in front of Lush Lashes and Katiyra in the Oaks, hopefully we will do again on Saturday."John Gosden's filly Dar Re Mi got as close as any horse to the brilliant Zarkava when second in the Prix Vermeille, and also ran Lush Lashes close in the Yorkshire Oaks.She was denied by just a short head on her reappearance in the Middleton Stakes at York.Simon Marsh, racing manager for Dar Re Mi's owner, Lord Lloyd-Webber, said: "It's a very competitive little race. She has been doing well at home, has travelled over well and we hope she will run a good race - but there are three other good fillies in there."Lush Lashes represents Jim Bolger, who twice this decade landed the Pretty Polly with Alexander Goldrun.His latest representative was similarly hardy as a three-year-old, but has been below-par on her two recent starts and was only sixth when favourite for last week's Windsor Forest Stakes at Royal Ascot.Bolger said nothing had come to light after the run, reporting; "I wasn't disappointed - she just didn't run up to her form. These things happen in racing. She's doing fine."