Robes (silly question)

[Stephanie Roark Keener]

No: HPFGUIDX 24388

Okay, so I'm rolling the cat hair off my husband's academic robes a 
few minutes ago (hopefully, I'll get a photo of him in his robes at 
opening convocation, he's got crazy black hair and round glasses, 
people STARE, I'll post it here, it's too funny) and I think, "Now 
are these the kind of robes wizards wear?"  Are they long and full to 
the ground?  Do they wear other clothes under them?  Are they open or 
closed in the front?  I remember someone at the Quiddich WC wearing a 
nightgown b/c he likes to be, er, "free" -- but I also remember Lupin 
sticking his wand in his belt (NO JOKES about my remembering anything 
having to do with Lupin's belt area), which suggests pants. What do 
they look like in the movie -- I just haven't checked.  
Stephanie