In order to purchase all the clothes, you are going to need a lot of fabric. As seen from the solution above, much of the clothing can be collected by finding the chest throughout the world in game.
However, you will still need up to 1000 fabric if not slightly more to buy the rest of the clothing items.
I was unable to find a complete list but here is where a few of the golden cloth (100 cloth each) locations are found:
On Mean Street South, above the detective agency, next to the hat shop.
(Thin the area, then pull over the boxes by the round underground.manhole.
On Mean Street South above the fire station -- if you go around to the right, it is on a ledge, behind.
On Mean Street North, beside the camera shop. (I ride Oswald around to get it, then drop to the ledge below to leave.)
On top of Moody's house, in Ostown. He is the one beside the thinner tank, with a pirate outside, and he wants his house painted blue. (Thin a lot of the top of his house, and double jump above the door, then to the roof. Thin until you see it.
Each of the six underground repair areas on Mean Street have a Gold 100 cloth in it.
Finding the gold clothes is not enough, so you will need to do a bit of grinding:
Start in Bog Easy, in front of the store.
Thin out the big orange thing in front, and there is one chest there.
Go left, and spin the crate there, by the part of the building that is sticking out.
Paint the building.
Jump on the roof and go toward the rock wall, and up to the right back corner.
There are 3 chests there (and maybe a top hat on the way). Things are easier to see if you have the brightness on your TV turned up for games.
Coming back, THIN THE TRAP DOOR IN THE ROOF of the store.
Drop down.
Use your door opening button which will drop you into the store.
Don't move, just use your door opening button again.
AND REPEAT!!!!!
This will also get you rich if you need lots of e-tickets.
Message me if you need any help regarding this game.