As one of Team GB’s most glamorous supporters, The Duchess of Cambridge has perfected a style that is both chic and smart, but does not draw undue attention from the athletes. It seems in the last few days that when she hasn’t been wearing official TEAM GB pieces that polo tops and tracksuit jackets, that she has stuck to a wardrobe of skinny jeans teamed with a blazer, and a palette of mainly (what else?) red, white and blue. The Smythe blazer made a second appearance this week when it was teamed with a Breton striped vest top – a real summer classic. Breton stripes are always such a cool…