Keep. I'm learning that you guys are fans of cardigans on me. I don't think I've had to donate one yet! As for this particular cardigan, I don't wear it with much other than this dress, but I think it could look cute with something neutral or maybe something royal blue. Bright green and royal blue was my favorite color combination freshman year of high school, and I remember having an Adidas shirt (actually possibly a knockoff) in those colors.