Jenni uses a flag pole to stretch her jumper
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Jenni cuts the jumper into a long strip with a knife, ties one end of it to a flag pole, and pulls on the other end to stretch it out.
At the end, her jumper is measured at 4.8 metres long.
(Written by TRoosevelt1776 and proofread by Karl Craven)