[quote=McHaggis]
I think they still wore uniforms in OoTP movie too, if I remember correctly. And in one of the books Malfoy docked points for someone having an untucked shirt. But yeah there's evidence for both ways.Ehehehe nice save, Legion :D
[/quote]

They mainly just wore the sweaters and such. They hardly ever wore robes after Goblet of Fire. It always bothered me in the movies when thw adult wizards would perfectly dress themselves as Muggles when in the books they dressed ridiculously when trying to wear Muggle clothing.