Cassie is out here putting in work lately! The singer just released a mixtape and now she has teamed up with Forever 21 for their summer campaign. Cas rocks a very 90s, vibrant look for the Forever 21’s Summer 2013 Forever L.A. collection. As you know, the singer has campaigned for many stores/brands including Calvin Klein, adidas, Delia’s, and more so this is nothing new to the beauty. Check out some pics from her Forever 21 campaign in the gallery.