To celebrate the launch of Topshop's new make-up range - and find out who really is the fairest of them all - from 5-9 May 2010 SHOWstudio installed a unique interactive mirror on the ground floor of Topshop's Oxford Circus flagship. Documented in this video, Topshop's eager crowds of fashionistas stood in front of our looking-glass to submit their style to scrutiny, as over thirty top fashion creatives - including Lady Gaga's stylist Nicola Formichetti, Edward Enninful of i-D and US Vogue, make-up artist Hannah Murray and fashion's favourite illustrator Julie Verhoeven - dispensed sartorial advice that appeared written, as if by magic, across the mirror's surface.