Grunge is a style of fashion that includes baggy, torn clothes. An example of grunge is a teenager wearing torn jeans and a baggy shirt and jacket.
Fashion in the 1990s was defined by a return to minimalist fashion, in contrast to the more elaborate and flashy trends of the 1980s.
oversize means bigger than usual. Therefore, when referring to the fit of a garment, it means that a shirt or a pair of bottoms is a little roomier than normal. Compared to a tailored fit, which is designed to contour the body, oversized fits are relaxed and roomy.