I've scoured the mall, and I cannot find the last piece of the Unicorn costume.  I've got the rest of the costumes completed, but this one is stumping me.  Hints?

Is that the one on the far left side of the second floor? Because I haven't figured out how to get over there either.

No, that's just candy I think; you can get to it from the arcade tunnel even after you fix the train.  I have the glitter and the shiny paper :\

Yeah I got the pumpkin piece, but obviously I haven't found one of the other to be simple to find since I can't find it :[

OK, I found it...that's what I get for assuming I'd already been to every escalator in the building :D

where is it? I'm still looking

I have the one in the pumpkin
 
found it, elevator on the second row

I still can't find it. Where specifically do you have to stand? This is making me crazy.

Where you get the shinny paper ???? is the one Im missing

" I still can't find it. Where specifically do you have to stand? This is making me crazy. "

How do you get the coffin on the other side of the track on the third floor to the left. Reading somewhere that you need to boost of the same ledge you go of for the pumpkin, but I can't do it.
 
Edit: nevermind, got it.

Can someone make this simple for me and explain very simply where exactly the location of the last material is?  I did the pumpkin and I did the little water river thing into the secret room.

You need to go through the hole in the arcade. On the traintrack instead of going around, there is a little path down a bit to the right of where you enter that takes you straight to the chest on the other side of the track.

@extremeradical, yes its the yarn and @jozzy, I've opened that chest.  

I've got all the materials, but I can't find all three of the judges for the contest. I've found Mrs. Kim and Mrs. Bagley, so where's the third judge?