In addition to being mum to little George, the pregnant royal has attended numerous public engagements while carrying her second child and looks incredible on every occasion.
Well, it turns out 33-year-old Kate has a secret beauty weapon which has worked wonders on the pregnant mum's complexion!
According to US Weekly, Kate can not live without Trilogy's Rosehip Oil which she applies religiously in a bid to maintain her stunning pregnancy glow.
According to a source, the pregnant royal is extremely careful when it comes to her beauty regime while pregnant, saying: "Kate is very cautious of products and treatments. Baby's health comes first."
The Triology product, which is rich in vitamin C and high in omega 3 and fatty acids, has however been given the nod of approval by the beautiful Kate, with the insider going on to reveal: "Kate continues to use rosehip oil in her daily skincare regiment. She loves the effect it has on her skin."
It's no surprise that the product which is retailing online for £16.50 has sold out following the royal reveal!
