I had already been nude for a solid seven minutes when renowned artist Spencer Tunick yelled into a megaphone: “Nobody should be naked yet – there’s still 45 minutes until sunrise!” The thousands of other naked people milling around came to a halt. We glanced at each other with confused eyes. Did he just say we shouldn’t be naked? A few keen beans had jumped the gun, and a few more had followed suit. Some people reunited with their clothes, but for me, there was no going back. So at 4am on Sunday, I found myself sitting in a gutter