Royal Enclosure Dress code
Headwear- The main guide that must be adhere to is the crown of the head must be covered, all hats are acceptable, fascinators must be of a substantial size covering the crown, small fascinators, small headbands, hair clips and hair combs are not acceptable,
Dresses - must be knee length or longer, no strapless or shoe string, halter neck, even if covered with a shawl, all shoulders must be covered with suitable sleeves.
matching trousers suites are acceptable
For all other areas of Royal Ascot the above mentioned are acceptable