'Poppy has gone down a storm in New York because she is the living embodiment of the American fantasy of what an English girl should be,' says American Vogue contributing editor Plum Sykes, who has been a mentor to her, just as Anna Wintour was to Plum in her turn. The Great British power network is still going strong. 'She's not knowing or calculating, the way some very social girls are,' adds Plum. 'She just seems utterly natural. If you see her at a party, or a fashion shoot, it's as if she's just there having a glorious time, not trying to get ahead, or manipulate her image in a cynical way.'