 Among the millinery innovations Saint-Cyr is said to have devised, were the oblique hat – in which one side of the brim is angled, enabling decorative details to be placed on the crown.The oblique-brim hat has remained a favoured style for the Queen.She was also among the leading exponents of the 'cocktail hat' that came into vogue during the wartime years – this was typically a confection involving black silk and netting that could be worn with eveningwear.