I rarely get excited about designer collaborations with high-street shops and those created for a certain cause. This time was exception! First of all, I had to embrace this season’s hottest trend – a cool sweatshirt. Second, as a humanitarian at heart, I was happy that ALL proceeds from this collection’s sale go to Save the Children. Westfield London, London’s great shopping centre, teamed up with five talented designers, Louise Gray, Richard Nicoll, Sophia Webster, Thomas Tait and my beloved Peter Pilotto, to create 5 one of a kind sweatshirts to celebrate its 5th anniversary in style. The collection launched today and there are only 300 pieces in stock. Sweatshirts…