Put polkadots, blue, yellow and prints in the mix and you’ve got a perfect Blugirl-inspired outfit. My friend Francesca Christopoulou, half-Italian half-Greek and sister of fashion designer Alessandra Christopoulos-De Palo, wore a blue top with big white polkadots over her bluejeans and matched with a Pierro Guidi printed bag in warm shades of yellow, red, blue and green on a…