One of the biggest nights in fashion has just begun in London. Celebrities, from Shailene Woodley to Julia Roberts, have flown out to attend the glitzy British Fashion Awards at Royal Albert Hall. The ceremony, hosted by the British Fashion Council, recognizes the most innovative UK designers. And sometimes, some big surprise guests come: last year, Meghan Markle was a guest presenter and among them. Here, the best dresses on the London red carpet.