You have to see Pippa Middleton's wedding guest outfit.

Lady Gabriella Windsor married her partner Thomas Kingston today at St George's Chapel and some very familiar faces were there to celebrate. The dress Gabriella wore is absolutely stunning and you can see the bespoke design by Luisa Beccaria here. Royal fans may know the link between Pippa and Thomas as once upon a time, they dated briefly. Pippa attended today's ceremony accompanied by her husband James Matthews, parents Carole and Michael and brother James. OF course, there's a lot of interest in her outfit and she decided on Kate Spade for the perfect wedding guest ensemble. The blue midi-length dress features ruched sleeves and is priced around the £700 mark which works out to a pricey €800 or thereabouts. This particular dress won't be to everyone's taste but we do have to talk about the matching hairband which just so happens to be one of the biggest trends of summer 2019. Her shoes are also a similar shade of blue and while we wouldn't be mad on the fact that everything is co-ordinated, we are completely obsessed with that stunning hairband. The Duke and Duchess of Cambridge are noticeably missing from today's celebrations and this is believed to be because Prince William is due to attend the FA Cup Final. He missed it last year on account of his brother's wedding to Meghan Markle and so, we can see why this engagement was an important one to attend. Earlier this week, Kensington Palace revealed plans for the Duke's attendance with an official statement via Twitter.

The Duke of Cambridge, President of the @FA, will attend the 2019 #FACupFinal between Manchester City and Watford at Wembley Stadium, and will present the trophy to the winners. pic.twitter.com/hulJH6Ioxy

— Kensington Palace (@KensingtonRoyal) May 13, 2019