Two years ago, Kate Middleton and Prince William married in front of 23 million Americans and 2 billion people worldwide. The epic ceremony featured incredible style, wedding hats, a few awkward moments, and Pippa's show-stopping backside.

Kate arrived in a beautiful Sarah Burton for Alexander McQueen gown with a gorgeous veil and train. Her sister, Pippa wore a figure flattering white gown that caused quite a stir when spectators noticed her perfectly shaped backside. While Pippa may have grabbed the spotlight for a moment, Kate's beauty and poise took center stage. Among the notable guests, Victoria Beckham and her husband David arrived in blue while, Princesses Beatrice & Eugenie turned heads with over-the-top wedding hats.

Check out our favorite moments from the Royal Wedding, above.