Skin-tight clothing
From wipipedia.org
Skin-tight clothing is clothing that is so tight that it clings to the wearer's skin. It is normally made of stretchy cloth containing substantial amounts of Lycra, allowing it to take the shape of the wearer's body.
People may enjoy wearing skin-tight clothing because it gives them the feel of a second skin. Also, it shows off their bottoms and thighs, and their breasts for women and male bulge for men.