Sophie, Duchess of Edinburgh stepped out in a gorgeous blue midi dress as she visited the Osaka Expo today during her royal visit to Japan (22 September). What everyone's readingWearing the colour of the season, Sophie was captured wearing a stylish blue polka dot dress from Beulah London, which featured elegant pearl detailing and stylish puff sleeves. RICHARD A. BROOKS/AFP via Getty ImagesTo style her blue ensemble, Sophie teamed her polished look with summery white wedges and a blue crochet handbag. Snapped in the same dress in London during springtime this year, Sophie wore the chic polka dot number when she met with pensioners at the Royal Hospital in Chelsea in London at the end of April. So, if you love the Duchess of Edinburgh's polka dot dress, here are our favourite polka dresses right now, including styles just like Sophie's.