Whats this called?

i was seeing a friend at "stripper talent show" last night and saw something really cool i was interesting in learning. the girl who actually won ((i ume was a gymnast at some point)) was doing this thing with two large pieces of fabric suspended from the ceiling. she climbed up them and twirled around them, doing all this cool stuff. they were wrapped around her ankles at one point and she looked like she was about to fall but the fabric caught her. anyway, i know its probably gymnastics-related but i wondered if anyone knew more about it. whats it called? how do you go about learning it? is there some place you might go to learn this specifically? answers appreciated!