The Duchess of Cambridge, Kate Middleton, is one of the world's most inspirational fashion icons. But while other's brand her as "boring" some of her photos evidently show that The Duchess can be sultry.

Having the title as The Duchess of Cambridge doesn't come easy and it certainly doesn't come cheap. Being a representative of her country, Kate Middleton has proved that she is in fact one of the most stylish women not only in Britain but the rest of the world to date.

From simple Sunday clothes, to casuals, dresses and evening ball gowns, The Duchess has impressed continuously while only having few fashion misses here and there. Kate Middleton almost always knows what to wear on what event.

From black sultry lace to back baring gowns, The Duchess certainly knows how to keep it sexy but modest. And when it comes to more sophisticated long gowns, Kate Middleton prefers her favorite designers Alice Temperley, Jenny Packham and her go-to Alexander McQueen.

Although the prices doesn't come in bargain and The Duchess refuses to pay lower than the original price and she simply need not worry since her father-in-law, Prince Charles takes care of the bills under that condition that the clothes are used for "work."

See The Duchess of Cambridge, Kate Middleton, as she makes a transition from classy to sexy.

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Kate's Pretty Little Dresses: Top Ten Best Dresses of The Duchess of Cambridge [PHOTOS]