First Lady Michelle Obama Shows Off Polka Dots. Michelle is no stranger to Polka Dotted get ups, so it’s no surprise that she was recently spotted in Chi-Town wearing a goregous blue and white polka dot style dress. The dress featured a flattering A-Line cut, and showcased white on blue polka dots at the top, while moving into more blue on white polka dots towards the bottom. She finished the look by cinching in her waist, and red heels.