And if we're talking iconic or dodgy, there's really only one place to start...
With this little grey Man Utd number, last seen (or not, as it happens) before half time in a 1996 league game against Southampton at The Dell.
According to Sir Alex Ferguson, his side (3-0 down at the time) couldn't see each other, so he made them change in to a blue and white kit for the second half. The game finished 3-1, so the switch did sort of work.
Anyway, here's the La Casaca reinterpretation.
And some more retro beauties that they've given a modern twist to.
Chelsea 94-96 (quite similar to the United one, never caused anything like as much hassle)
AC Milan 95
Ajax 89
Bayern Munich 93
River Plate 94
And quite possibly the dodgiest of them all...
Real Madrid 96
There's no saving that one.