Kate's wedding outfit: an editing faux pas?

The Mirror, Times,Telegraph and Mail, below, all suggested that Sarah Baillie was somehow at fault

So another guest at the Lucy Meade-Charlie Budgett nuptials turned up in the same coat as the Duchess of Cambridge. This, according to the Mirror, Mail, Telegraph and Times, was a fashion faux pas. Why?
It's not as though she turned up in bridal white complete with freesias and train. How was Sarah Baillie supposed to know what Kate would be wearing? Had the Duchess posted a status update on her Facebook page "Digging out the old blue tweed for Lucy's bash"? 
At least the Mirror came up with an amusing headline.
Just in case you commit the unforgiveable social error of appearing at morning conference in the same pink Ben Sherman shirt as the editor, here is the SubScribe etiquette to cover the faux pas. When you see he's spotted the clash, feign surprise and look down at yourself and up at him with a sheepish or conspiratorial smile (depending on the boss). 

Then say "Snap!" and compliment yourself on your own good taste. 
If he doesn't notice that you are similarly attired, you can be sure that your "friends" will, so there will be post-conference ribbing. 
Just act suave. After all, you can't help being a style icon.

If, on the other hand, you rock up in the purple Ted Baker number that she's been wearing for the past couple of years, that is a career faux pas and there's no hope for you. Best not to mention the TK Maxx clearance rail.