The 28-year-old party planner looked stunning in a tight-fitting, raspberry-hued Issa silk dress, paired with a matching fascinator and black pumps as she made her way to longtime friend Camilla Hook's wedding. Hook tied the knot with Sam Holland in East Lothian, Scotland, Saturday, according to the Daily Mail.
And if this dress looks familiar, your mind isn't playing tricks on you.
Perhaps a sisterly "who wore it best" is in order?
Check out Kate's version and sound off in the comments.