That race and possibly one in Germany next month represent the last chances the five-year-old mare has of landing a Group One success as she is in foal to Cape Cross.
Trained by Dermot Weld, Chinese White has won six of her 13 starts including at Group Two and Three level.
She put a decent effort on her latest start when third to Fame And Glory in the Tattersalls Gold Cup.
“She’s flying. If there was a Group One tomorrow she’d be running in it,” said owner Lady O’Reilly’s racing manager James Kelly.
“She runs in the Pretty Polly and if she wins that she will be retired because obviously she’s in foal to Cape Cross.
“The only possible race for her after that would be a Group One in Germany a couple of weeks later, but hopefully the ground will be good or good to yielding for her to run at the Curragh as she appreciates a little bit of juice.
“Please God she will go and win the Pretty Polly. She deserves it and we are looking forward to breeding from her down the line.”
Tattersalls Gold Cup runner-up Recharge, also owned by Lady O’Reilly, is also set for more Group One duty after ending a run of three second places in a Listed race at Leopardstown on Thursday.
“Recharge is a fantastic horse. We’ve been aiming high with him all year,” Kelly went on.
“There are very few Group races he wouldn’t have won this year. He was just unlucky to run into Fame and Glory twice and Famous Name once.
“We’ve a huge programme for him. He might go for the Grand Prix de Saint-Cloud later this month and he’s entered everywhere. He’s a fun horse and a home-bred.”
Meanwhil;e connections of Sandbar are hoping the decision to supplement the filly will be rewarded in the Prix de Diane (French Oaks) at Chantilly tomorrow.
The daughter of Oasis Dream is unbeaten in three starts, all this season at Saint-Cloud, and her owner Lady O’Reilly would like the Francois Rohaut-trained filly to pick up some black type.
“She’s a very tough filly and home bred. Lady O’Reilly made a very brave move to supplement her,” said the owner’s racing manager James Kelly.
“It’s very difficult to figure out the French form. Neither Lady O’Reilly or Francois Rohaut can make head or tail of it. All the fillies seem to be beating each other.
“Numerically it’s a small field, but it certainly looks a very competitive one.
“It’s a sporting thing of Lady O’Reilly’s to do to supplement her, so hopefully her bravery will be rewarded with some Group One black type at the weekend.”
There are no British or Irish runners among the nine fillies.