Tavi Gevinson was 14 when she sat front row at the Dior Couture 2010 show in Paris. She’d been a familiar face on the fashion scene ever since Style Rookie, the blog she started when she was 11, caught the attention of designers and editors. It had led to her being flown around the world to review shows and interview major names for magazines, TV and websites. Her petite size (she was, as she puts it, ‘an actual child’) and larger-than-life personal style, coupled with an impressive understanding of cultural context and sartorial milieu was met with a mix of curiosity, affection and over-the-top reverence. For the shows that year, Tavi had dyed her hair blue but it faded to grey. In Paris, Karl Lagerfeld told her he liked it. ‘Normally, children – young people – don’t have this hair colour,’ he reportedly said. ‘It’s great to have it.’