A royal appearance: OK so K.Middy has just appeared on SnapChat!

We're big fans of Princess Kate around these parts – so today we've been pretty ecstatic at the news that the British royal has just made her SnapChat debut.

And while sadly, the 34-year-old hasn't set up her own profile just yet (imagine the totes adorbs snaps of George and Charlotte!), she did appear on the social media platform via winning semi-finalist Serena Williams's account. 

Hurrah!

In the video, which was taken at Wimbledon earlier today, the Duchess Of Cambridge can be seen rocking a bright yellow dress from Roskanda alongside the clearly delighted tennis superstar. 

Sophie, Countess Of Wessex is also in attendance and after Kate beckons for her to join the party-of-two, she can also be seen smiling warmly for the footage. 

And while the wife of Prince Wills is evidently rocking her best 'I'm not so sure about this but I better just play along' face – with Ms Williams, Wimbledon's current defending champion, is relishing the moment. 

Indeed, at one stage she announces: "OK so I'm in the in crowd now… I'm with royalty!"

With Serena now through to Saturday's final, and with the Duchess due to make further SW19 appearances over the course of the final few days of the competition, here's to hoping we can nab another few SnapChat sneak-peaks of Kate.