Labour leader David Shearer was entitled to be flattered when he arrived at Labour's caucus retreat in Waitangi today to find two of his MPs dressed almost identically in dark grey vests.
However, Labour MPs Jacinda Ardern and Trevor Mallard were less impressed.
Both tweeted a photo of Mr Shearer with his deputy leader Grant Robertson and MP Iain Lees Galloway in their matching vests, which Mr Mallard likened to "Supermen gone wrong."
Ms Ardern called for a straw poll on whether it was acceptable. She also reported that Mr Robertson had defended himself by saying he was cold, to which Cantabrian MP Megan Woods had responded by suggesting he invest in some sleeves.
All said it was a coincidence. But the reaction on Twitter was swift.