Nicole Kidman likes her cappuccinos bone dry — a shot of espresso with milk foam, rather than steamed milk. When Instagram’s naughtiest gossip page announced the “news” to the world (or at least its 1.3 million followers) last year, it triggered such a coffee-shop stampede that baristas poured on to social media to tell DeuxMoi it had made their lives hell.

Such is the power of DeuxMoi, an anonymous account that pumps out unsubstantiated stories, salacious rumours and mundane facts about famous people. Its New-York-based editor will not reveal her identity. Neither will her sources, who send their stories via Instagram or her website to be posted verbatim on DeuxMoi’s page.

In the Noughties, blogs ruled the world of celebrity tittle-tattle, led by the