Well...Rogue HATED Carol's outfit and couldn't wait to get rid of it. I think there were a few reasons. Rogue's tastes in clothing at the time ran more on the conservative side. No flashy Lightning bolt insignia for her. The other is she resented wearing someone else's clothing style involuntarily. I don't blame Rogue at all for wanting to see Carol's old costume in a trash can! (Sorry about the Black and white. I took this from my Essential X-Men Vol 9. It's from UXM#247)