Kate Middleton stepped out ahead of Trooping the Colour for a surprise appearance. The duchess attended the Beating Retreat Ceremony in London [1], which includes music and a military precision drill, taking her duties seriously in a sophisticated cream coat by Catherine Walker. The outerwear featured details Kate seems to be fond of: a crisp collar, pockets, a cinched waist, and a knee-length fit, all the better for Kate to show off her shoes. Kate's accessories came in a dusty rose shade, making for the perfect Summer pairing, if we do say so ourselves. In the sunlight, Kate's pieces seemed to blend together, altogether coming off as a subtle pink.

Kate played up the feminine vibes with pearl earrings and her Irish Guards shamrock brooch, which you might remember from St. Patrick's Day [2]. You're probably well-aware that when it comes to one-and-done professional outfits, Kate opts for a coat dress more often than not, and she's officially proved that they're appropriate for every season — that is, if you have a few royal styling tricks [3] up your sleeve. Just offset neutral shades with jewels that feel fancy, but not too over the top, and stay away from dark colors. Button up, and you're good to go — we bet you'll even look cool in 80-degree weather.

Kate Middleton at the Household Division Beating Retreat in London

Kate wore a cream Catherine Walker coat.