Two, Three, Four, Tell the People What She Wore

On this day in 1960, “Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini” hit #1 on the Billboard Hot 100.

Irina Shayk is dressed to commemorate, right down to the color of the polka dots.

But let us be colorblind and make today a celebration of polka dot bikinis from across the spectrum.