She always looks flawless, whether she is attending a gala dinner or disembarking a plane after a ten-hour flight with two kids in tow (beyond impressive!) And even stepping out the other night in support of World Mental Health Day, having been suffering from Hyperemesis Gravidarum for weeks (the Duchess is currently, as we all know by now, expecting her baby #3), Kate looked nothing short of radiant. Her secret? Well, according to US Weekly, the product to credit for her princess perfect skin is Trilogy's famous Rosehip Oil.   Yup, that's right. Kate Middleton swears by organic rosehip oil to maintain glowing, wrinkle-free skin. Bonus? This natural beauty product is also completely safe to use when pregnant. "Kate continues to use rosehip oil in her daily skincare regiment," a source added to the magazine. "She loves the effect is has on her skin. [Her mother] Carole [Middleton] is also a fan." Rosehip oil has long since been famous for its skin-perfecting properties. It is high in Vitamins A and C, is an anti-inflammatory, and is also known to close pores, which helps give your skin that perfect, flawless glow. It's filled with antioxidants, prevents redness during those dreaded acne breakouts, and even slows down signs of ageing. No wonder then, that globally, a bottle of Trilogy Rosehip Oil is sold every 20 seconds. As well as being very effective, rosehip oil is also completely natural, meaning for those of you into limiting your exposure to chemicals and toxic beauty products, this is a perfect and safe choice. And the best bit? At €19 it is completely affordable to all of us without the princess beauty budget too. Trilogy Rosehip Oil is available from Boots, Holland & Barrett and selected pharmacies nationwide.