Image as variant to display another image as main image

[JordanGeorgiou]

Hi,

I would like to add a variant image, which when clicked on, shows another image as the main image.

eg selling t shirts, customer clicks on the variant which shows stripes (eg stripe image fabric), image is shows of the stripe t shirt (eg t shirt with stripe image)

It seems like this should be basic functionality but cannot find it anywhere

All help very welcome!