Question about where to find specific top/shirt for cosplay

Hi guys! This is my first time posting, but I'm hoping someone might be able to help me find a corset top for a cosplay I'm looking to do. My plan is to buy a base top and add what I need to, via sewing, to complete the costume. I'm completely sewing the skirt, but I need a top. The pictures of it are either above or below this (I forgot how it works). I have tried looking up "long sleeve brown corset" and several other similar things, and I can't find what I'm looking for. Is it something you think I could even find online (or close to it)? And if so, what would I call this style of top to find it?

Any help is very appreciated! Thank you!

PS: sorry for the poor picture quality. I screenshotted off YouTube to get pictures of it.