the Consultant according to the rules of etiquette Diane Matera said that in some cases, the spouses of heirs to the British throne Kate Middleton and Meghan Markle have to go with hats. It is reported by The Sun.
“up To 1950-ies to meet a woman without a hat was nearly impossible to show hair in public was considered indecent. But now everything has changed, and hats wear it only during formal events,” explained Mater. That is why the wife of the British princes appear on the Royal receptions during official travel in hats, and on birthdays, christenings or weddings.
in addition, women should not wear a hat after six in the evening, as it is considered a violation of the rules of the Royal dresscode.