Came across this great little online store.
Black Milk specialises in elasticated prints, such as swimsuits, catsuits, bodysuits, but best of all is their leggings. They have pretty much every design imaginable from the simply black wet look to the daring American stars and stripes.
My personal favourite are these galaxy leggings, which even have a 1-2 week waiting list.
(a similar print as that used in many of Christopher Kane's latest designs)