The magazine editor and Bill have been seen together at a number of fashion shows over the years. They have also been spotted together at theatres and restaurants in London and New York in the past.
Rumours surrounding Anna and Bill’s relationship have swirled since 2010 but Bill has declined to comment on their friendship in the past.
He told the MailOnline in 2015: ‘Obviously I have nothing to say about that. There are a lot of rumours about me and probably about Anna Wintour.’ British Anna was previously partnered to Texan telecoms magnate Shelby, 75, with the former pair being hailed as one of America’s power couples.
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