The Middleton sisters turned heads when they attended a friend's wedding recently, but who looked better, the Duchess or the younger sister?

Since showing off in Sarah Burton for Alexander McQueen bridal and bridesmaid dresses, the Middleton sisters have been on the eye of the fashion industry. Since the two have enormous influence among young and stylish women, everything the two wears sell out almost instantly after being seen.

One example is the Reiss dress the Duchess wore for their Washington visit to meet President Barack Obama and his wife Michelle, sold out a day or two after Middleton was spotted wearing it.

While Kate obviously sticks to classy choices, her younger sister Pippa is not too tamed when it comes to her choices. For the weekend wedding the sisters attended, Pippa wore a silk graphic dress from Project D (Dannii Minougue's fashion line) that she paired with a patent spectator that glistened in the sun. Kate on the other hand, decided to stay refined with a red lace dress by Collette Dinnigan.

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