David Blevins, Sky News' Ireland correspondent, noticed that Northern Irish first minister Arlene Foster, Scottish first minister Nicola Sturgeon, and UTV journalist Tracey Magee had similar suits.
Just four minutes later, Sturgeon fired back at Blevins with this absolute belter of a tweet using his own profile picture.
The other man in Sturgeon's first tweet, Ireland's equality minister, Aodhán Ó Ríordáin, seemed surprised by his inclusion.
But Sturgeon reassured him his suit is lovely.
And Blevins has regretted causing an "international incident".
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Who wore it best?
vote votesDavid Blevins
vote votesAodhán Ó Ríordáin
Jamie Ross is a Scotland reporter for BuzzFeed News and is based in Edinburgh.
Contact Jamie Ross at firstname.lastname@example.org.
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