This year I'm getting the bulk of my Christmas shopping done at one place: M&S.The retailer has become incredibly trendy with all age groups, offering catwalk-to-highstreet buys as well as affordable beauty products that rival designer formulas. So, when M&S sent around its Christmas gift guide this week, I got my pen and paper out ready to make notes.The festive offerings don't disappoint, I can promise you that. With most buys launching in stores and online now, those who are keen to get some of their Christmas shopping done early can snap up the gifts at their earliest convenience.