Photo: Samir Hussein, WireImage

Ever since Kate Middleton’s engagement to Prince William was announced we’ve scrutinized every sartorial choice she’s made. Without a doubt, she knocked it out of the park on her wedding day, looking flawless in Sarah Burton for McQueen. But beyond the big day, the Duchess of Cambridge tends to play it safe–conservative, appropriate, accessible. She wears high street pieces that are figure flattering in solid colors, and more often than not, she pairs her simple dresses and jeans with those LK Bennett wedges. “Conservative, appropriate and accessible” aren’t exactly the descriptors we’d use to describe many of the stylish ladies we fawn over on Fashionista. We’re always hoping the Duchess will take a little risk and prove us wrong today she did, wowing in a shimmering Jenny Packham gown at the 10th Annual ARK Gala Dinner at Kensington Palace.

The Duchess may dress down in wedges and Zara when she’s out running errands, but she’s proving event after formal event now that she can gussy up with the best of them–Michelle Obama included. Take a look at her style evolution since her engagement was officially announced.