The dress code for EK's Open Day is business attire. Skirt or pant are acceptable but make sure they fit you to look professional. Light make up for women and hair well groomed and tied back. Remember in group discussion just stay calm and DO NOT talk a lot, respect others opinions and DO NOT interrupt the conversation. Furthermore, they are looking for team players and not a leader.
Wish you the best of lucks!
My DOJ is Apr 18.