The costumes I see at Halloween are nowhere near as crazy as the costumes I see at anime conventions. Anime fans spend months working on their costumes and some of them are movie quality. Check out this example I found online. Here's a cosplayer dressed as Erza Scarlet from Fairy Tail in her Heaven's Wheel armor.
I don't know I have seen a lot of crazy costumes but I think the craziest one was this girl painted her self blue and had spandex pants and only little leaves covering her nipples she was suppose to be the chick from avatar lol
The ones at anime conventions are pretty neat. So many creative costumes like the one shown above. Do a quick google search and you can see for yourself.
Here's Asian Link. Well ,Legend of Zelda originated in Japan so it makes sense. It's a very detailed costume.
Wow, those anime costumes are great, but I'll bet they are expensive to buy or even make. Even the accessories, like the gun, I guess it's a gun that the girl with Gizmo on her head is holding, would be expensive. I like looking at costumes and some people have a great imagination when it comes to making them.