Awkward...
Brexit, in a single shot. This morning at the EU summit. pic.twitter.com/1WlKeekRQy
— Daniel Sandford (@BBCDanielS) December 15, 2016
As The Telegraph reports, the video, tweeted by journalists covering Thursday morning's event in Brussels, shows Mrs May having to fidget while her European counterparts greet each other warmly and chat. The PM has also not been invited to this evening's end-of-year dinner.
The 28 leaders have gathered in the Belgian capital to discuss migrants, Turkey, Russia and Donald Trump, and mostly hugged, with the exception of the PM.
This evening's dinner will not be the first occasion Mrs May has been treated coolly by her 27 European counterparts since she succeeded David Cameron.
In October, she dined with other EU leaders, and was invited to set out Britain's position on Brexit, but was made to wait until “long after the waiters were waiting to clear the dishes away”, one observer said.