Speaking about judging the event the actress, who plays Tina McIntyre in the soap, said: "I'm really looking forward to attending the Dubai Duty Free Irish Derby at The Curragh this June.
"I’m a big fan of fashion, so when I was asked to be a guest judge I was really excited!
"I’m sure the competition will be fierce, and I can’t wait to see what the ladies will be wearing on the day.
"I’ve no doubt whoever wins this year will look fantastic and it’s going to be really difficult for my fellow judges and I to decide on one winner, but we are up for the challenge!"
The Dubai Duty Free Irish Derby Festival will take place from Friday 28 to Sunday 30 June 30.