Kate Middleton was challenged to a game of style snap by Pippa Middleton over the weekend, when the Duchess's sister stepped out in exactly the same Issa dress Kate wore to announce her engagement in 2010.
But who wore the dress best?
Kate Middleton was first to wear the simple Issa look, choosing the £385 London sapphire dress for the all-important photocall at the announcement of her engagement to Prince William in 2010.
Kate teamed her dress with simple black suede court shoes, her trademark glossy, blow-dried locks and a rather sparkly sapphire engagement ring.
Needless to say the dress sold out in minutes.
A firm fan of Issa's Daniella Issa Helayel's designs, the Duchess of Cambridge has been spotted out in several dresses by the fashion house over the years, from a charity date night with Prince William, to her very first royal tour.
Meanwhile, Pippa Middleton followed in her sister's super-stylish footsteps over the weekend, when she stepped out at the wedding of childhood friend Camilla Hook wearing an exact match of Kate's engagement announcement dress.
Choosing a slightly more adventurous sartorial path, Pippa accessorised her vivid raspberry-coloured Issa number with an attention-grabbing floral hat, a black clutch and high black heels.
Two stylish sisters, one timeless Issa dress, but who wore the look best?
Team MC are divided…
Did Kate Middleton or Pippa Middleton wear Issa's stylish wrap dress best? Let us know in the comments box below.