While of course Kate Middleton's wedding dress is the star of the show, it's the guest's hats and fascinators that have caught people's attentions as well at the royal wedding.

Princesses Beatrice, 22, and Eugenie, 21, cousins to Prince William, topped their wedding outfits with some outrageously fashionable headpieces.

According to UsMagazine.com, the sisters, daughters of Prince Andrew, Duke of York, and Sarah Ferguson, chose Philip Treacy to design their fascinators.

"Beatrice loves her glamorous dresses and her hair being curly or big -- like Mummy's -- and I hate volume. I like my hair to be sort of flat," Eugenie told The Telegraph. "I like just throwing on a pair of jeans and generally being more understated. She is more 'Let's do the glamour.' We're chalk and cheese."