staud exclusive trinity lace-inset silk maxi slip dress STAUD Trinity lace-insert Maxi Dress | Brown

Its cut to a figure-skimming fishtail silhouette, framed with a minimalist scoop neckline and elasticated rouleau shoulder straps

We love the allover lightweight fabrication on this, complete with a flowy, a-line silhouette

You see them here with Keith Weed, the President of the Royal Horticultural Society. Other royals attending today's event included the Duke and Duchess of Gloucester, Prince and Princess Michael of Kent, and Princess Alexandra

Now for our look at what Kate wore. She was in a dress initially identified as an Alexander McQueen design

The pleated bodice and ruffle-layered skirt will have you looking flawless all night