Kate's tweed suit from yesterday was a new brand for her. Eponine of London. The red and white gingham check, two piece suit is from the current ready-to-wear season. The small relatively unknown firm has been flooded with sales and enquiries for this 60's inspired suit, which costs £1,200. The designer, Jet Shenkman, says she has, "never experienced anything like this," and is very pleased Kate chose this piece.