When it comes to fashion: where Kate Middleton leads, the rest of us follow. We can pretty much all agree with this, right?

Earlier this year, Kate sparked the red-and-pink clash trend with her red headband and pink dress at baby Archie’s christening. It’s arguably no coincidence that red-and-pink was the colour clash of choice on the Emmy’s red carpet last week.

The Duchess also caused a floral & Other Stories dress to sell out in the summer, after being photographed wearing it at the Chelsea Flower Show.

And do we really need to point out that Kate is the reason why LK Bennett’s nude courts have been going strong since 2014?

Knowing the influence her sartorial choices have, Kate used her outfit to support the fight against climate change this week.

And she wore it when meeting with nature’s biggest friend and ally: Sir David Attenborough.

The real reason Kate Middleton wore that blue coat in front of David Attenborough