Showing her love for pink, Swift wore polka dot tennis shows as she carried an elegant handbag.
A few blocks east of Gratiot, multicoloured polka dots, stripes and squiggles appear on the street, then the houses explode in a riot of colours and textures.
A tiny fly called Drosophila guttifera sports a distinctive pattern of 16 polka dots on its wings.
I love polka dots and this pattern has a more random splay of dots and almost looks like a hazy animal print from a distance.
Customer: I would like the one with the pink polka dots, please.
There is also an interesting contrast between the darkness of the subject's mood and lightness of her pink and polka dot clothes.