Prince William and Kate Middleton, who is now a princess, exchanged sweet smiles and he whispered "you look beautiful" to his bride as soon as she walked down the aisle for their royal wedding ceremony. Kate Middleton wore an Alexander McQueen wedding gown for her big day, designed by Sarah Burton for the iconic fashion house. Prince William and Kate exchanged their vows near the beginning of the ceremony, though their first kiss as husband and wife is still to come. Kate's father, Michael Middleton, walked his eldest daughter down the aisle, while maid of honor Pippa, who was also in a stunning white McQueen, held onto the bride's train. Check Fab for all of Kate Middleton's wedding dress details and Bella for all of the beauty details from the royal wedding!