This should quite easy to duplicate using a knit fabric that would unravel, for example sweatshirts. You can even use small strips for the ties making the gap a big wider depending on the size of your strips.
The Gap Band --- Listened to their music, a bit, in the early 80s. Click on the group's pic to view/listen to video for 'You Dropped A Bomb on Me'. Recorded in 1982. I'm not a fan of the video (hey, it was the 80s!:)) but, I like the song...good dance music.
If you’re planning on visiting London this summer, you might just want to familiarise yourself with some British Slang expressions that are very commonly used by the British. They will be very useful particularly if you’re likely to be socialising with Londoners.