Princess Kate subtly bends royal rules while wearing sky-high Ralph Lauren heels
The accessory that arguably stole the show was her striking Juliette Botterill hat; one of the largest we have seen Kate wear. Priced at £695, it was adorned with a single ostrich quill - the perfect blend of classic style and modern flair.

The style is actually touted as a 'boater' hat; its official name on the brand's website is the 'Houndstooth Straw Boater.' Interestingly, Kate opted for this style of hat, as after all, the boater is often seen as a summery, more casual choice, embraced at garden parties or perhaps a regatta.

The royal ladies will often wear a hat to church. It nods to social etiquette but is also a mark of respect. Centuries ago, it was seen as disrespectful for a woman to enter a church with her hair uncovered. It's also worth noting that hats enable the royal family to be seen when crowds of people congregate.

Speaking of the hat in question, Kate's headgear gave her a bit of trouble as she and her husband, Prince William, battled the wind upon arrival outside the cathedral. The royal effortlessly held her hat in place as she arrived, and it stayed perfectly positioned on her head, not moving an inch, despite the wind. What a professional.