Definition of "skintight"

He'd have to stow the Gun somewhere; no place to conceal it in the skintight bodysuit.

1967 May, William F. Nolan, George Clayton Johnson, Logan's Run, Bantam, published 1976, page 25

I'mma get your heart racing / In my skin-tight jeans / Be your teenage dream tonight

2010, “Teenage Dream”, performed by Katy Perry