Can anyone tell me what material is used in thie fire burlesque video?

http://www.youtube.com/watch?v=f63ysauq9lk

Around 1.49 she brings the torches behind her back and seemingly burns off whatever is holding her corset together and it drops off without any flame. Can anyone tell me what she might be using to keep the corset together? I'm working on a new fire eating burlesque routine and the information would be really appreciated. Thanks! (:

well she does that already with all the other holders of the costume and I guess you can pretty much use either any natural fabric (manipulated with a flammable liquid), alternatively there is this fire-thread but I'm not sure how strong it is to hold the costume together in the first place.

It doesn't seem as if she'd be using it, judged by the way it burns off without much ado.

Sorry if that didn't help too much...