The sombrero is a fav of hazza but he aslo likes the beret.
The characters wear normal "muggle" clothes, wizard's robes (often bright colored), black Hogwarts robes, and pointed hats.
Get all the golden hats, to unlock new characters including Prof.Trewlaney
A frog
Yes you will be able to get a large selection of Harry Potter items at Amazon. Some of these are cake toppers, napkins, sorting hats, balloons and cups.
Some great items for a Harry Potter party would me magic sticks and wizard hats. I could not imagine one without these two items.
To collect all the wizard hats in Year 2 of LEGO Harry Potter, you'll need to explore each of the levels thoroughly. Look for hidden areas and use specific spells to access secret locations where the hats are located. Additionally, some hats can only be obtained by completing certain tasks or defeating enemies. Make sure to replay levels if you miss any hats during your initial playthrough.
Anywhere where they sell animal hats but if you want the real one they sell some on eBay too hope I helped!! 
Sorry I can't tell you all of them, but I recall one is in a trash can. Try blowing them all up.
umm well its not a test its the sortng hats, you put the hat on the hat says the name of your house
Popular styles of hats in India include turbans, topis, and pagris. These hats can be purchased at local markets, traditional clothing stores, and online retailers that specialize in Indian fashion accessories.
There were countless types and styles of hats worn by Chinese emperors, including helmets, coronets, and of course, the royal crown.
In men's hats the style that sell is really the baseball cap with any team on in. In western hats it's the Stetson.