Since the Duchess of Cambridge's brand of modern ladylike style has spawned a worldwide following, Prince George's official portrait isn't just an opportunity to coo over the new royal baby, it's another chance to check out Kate's wardrobe. In line with her typically polished, feminine aesthetic, the duchess chose a bright fuchsia Seraphine dress (£46) with a figure-flattering knot at the waist. The best part? You could be admiring this one in your own wardrobe, as it's one of Kate's many affordable finds. We've done the legwork for you, so by all means "ooh" and "aah" over the adorable family, but don't forget to buy the dress for yourself.