There are a ton of rompers to choose from, too, ranging from fancy to casual ... that will have your outfit blooming from first wear. White a great blank slate for styling, and we love this ...

Kate's look is sexier and way cooler than just about any iteration of the romper we've seen before. It also happens to be a perfect Summer white. For a complete look at the girl- and guy-approved ...

For the event, she rocked a white frilly mini romper—the UO Primrose Lace Babydoll Romper ($59), to be exact—paired with brown cowgirl boots.