Any Fluxus and LnA Top can fit into the grunge category. I love the Joie Refugee Black Distressed Boots. They have the already worn look and dirty look and will complete any grungelook your trying to pull off. These boots are perfect to match with a pair of Skinny Distressed Jeans and a Grunge Rock star Tee.
My ultimate pick for the Grunge look is the Singer22 Exclusive LnA Olivia Thrasher Gathered Bottom Leggings. These are as grunge as it comes. Sleek, yet sexy leggings with hand torn holes make for the perfect look. Each pair is hand torn so no two pair are alike. You can match these with the black distressed boots or with a pair of grunge ankle boots. Either way, they are hot!
www.singer22.com also has the Singer22 Exclusive LnA Ripped Short Sleeve Tee to add to yourgrunge collection. These shirts as well are hand torn so no two pieces are alike. You can get it in Black or White. Match it with the Singer22 Exclusive Leggings or with a pair of Current/Elliott Distressed jeans for the ultimate grunge look.