They just dont understand!
I think the biggest fashion mistake was Bono's mohawk in the Pop era. Yuck.
OME how could you say that; he never looked hotter.
It (biggest mistake) was Edge's nipple-high pants in the late 80s (see Self Aid, when he takes his guitar off at the end of Bad, for an example), but that wasn't on the list. I can't remember what I picked now. Aside from that, I love all the looks which most other people find disgusting

especially the fro! And everything else they wore around October era.