We're really loving these science-themed leggings from Shenova Fashion over on Etsy – just two examples from the shop's impressive lineup of science- and technology-themed threads (also up for sale: Mars Curiosity Rover and Acupuntcure Anatomy dresses).
On the left is a pair of neuron/retina leggings, while the pair on the right sports a DNA pattern (albeit with some weird switcheroos in the molecule's handedness... which... whatever. We'll let it pass. Because science leggings.)
See also: meat pants.