Both Kate Middleton and her sister Pippa have become fashion icons, revamping and exporting British Royal style across the globe. But which sister is the best dressed? Is it the Duchess of Cambridge, the new bride of England's Prince William, or is it her older sister, the newest "it" girl of the commonwealth?

"Pippa is more casual chic," says fashion blogger Amanda Sung. "Kate's 'off-duty' look while grocery shopping in Wales is more similar to Pippa's day to day."

What's true regardless of who is best dressed, is that both women are trend setters. Kate Middleton has made both Reiss and Sarah Burton household names, while Pippa has shown Britons how to look great on the go. Both make the news wherever they appear, and Kate was even named the Best Dressed Internationally by Vanity Fair magazine.

Click through to see the sisters go head-to-head. You be the judge of who is best dressed.