From cute summer Topshop gúnas to pretty printed Tory Burch suits to elegant, show-stopping couture creations from Jenny Packham, Kate is a PhD in dressing for occasions, so it's no wonder women all over the world look to her for inspiration for their own formal wardrobes.
Of course the foundation of Kate's trend-setting looks is great styling, and whether she's attending a polo match or welcoming a head of state, the beautiful royal always looks perfectly preened and well put together.
Kate's formal wardrobe consists of a couple of staples, and for summer events the 35-year-old is usually spotted in pastel shades finished with a fabulous fascinator and of course, a trusty pair of nude heels.
And she's not afraid to recycle an outfit either. The fashionista is known for sporting the same gúnas more than once, restyled with different accessories to suit the occasion. Which is something we can all get on board with.
She's also more than accustomed to harvesting the high street for her contemporary wear, just like us! The princess famously wore an over-the-knee, £38 polka dot Topshop dress to the Harry Potter studios which sparked a frenzy online and sold out in Topshop branches around the world instantly (and again, just like us, the look was recycled, this time for a friend's wedding.)
With little sis Pippa's alleged demands on wedding guests to sport more than one outfit on the day, it looks like we're in for a fashion overload on the day!
For now, with wedding season fast approaching, we look to the Queen of formal fashion's past looks for some outfit inspo...