You\u2019re ready for that nerve wracking event in every parent\u2019s life \u2013 the school parents\u2019 evening. You\u2019ve done your best to look neat and tidy when your son says, \u2018Mum, you\u2019re not going in that jacket are you?\u2019 It seems there is no fashion critic so brutal as a child \u2013 especially if Mum is going to be witnessed by their peers and teachers. We sent Tamsin Smith to meet some women and their children to find out why it matters so much.