The Duchess of Cambridge in M Missoni at wedding [Getty]
Weddings can be a tricky style area to navigate. White is off the cards, you can't upstage the bridal party and there's always the chance that someone will show up in the very same Topshop dress as you. Oh and the other question: Hat or no hat?
The queen of appropriate wedding dressing is, of course, our very own Duchess of Cambridge. Wedding Pinterest boards are flooded with her matchy matchy twinsets and fascinators. At the wedding of Lucy Meade and Charlie Budgett this weekend it looks like one woman followed Kate Middleton's wedding style rules, as she opted for an old Kate favourite.
Oops! Kate and unidentified guest wear the very same coat [Getty]
The unidentified lady wore the blue tweed coat from M Missoni's Autumn Winter 2010 collection, which Kate wore on a Jubilee appearance in 2012. But this Copy Kate had one big problem: the ultimate re-wearer Kate Middleton was in attendance in the very same dress. Uh oh!
Turning up in the same outfit as someone else is a hazard for the princess who wears high street. Note to self: do not wear a Kate Middleton favourite when the repeat re-wearer is in attendance.
The Duchess of Cambridge, Prince William and Prince Harry at Lucy Meade & Charlie Budgett's Wedding [Getty]
The Duchess bought the M Missoni's jacket from Bicester village in Oxfordshire, which was £765 before the reduction. She first wore it to a visit to Fortnum and Mason with the Queen and the Duchess of Cornwall two years ago in March 2012.
Our friends over at What Kate Wore, quickly identified Kate's latest look as under the coat she wore her blue floral Whistles Bella dress she wore to the London 2012 Closing Ceremony, with gold Cassandra Goad earrings and black Episode heels. Kate is an expert at wedding dressing, so if you want to get her look follow her wedding-guest style rules here.
See Kate Middleton's style evolution in the gallery below...