‘Instagram’s Worst Con Artist’ Belle Gibson managed to convince the world she had incurable brain cancer but had beaten it using a healthy diet – her awful lies were uncovered when she made a crucial mistake and the extent of her fraud was discovered‘Instagram’s Worst Con Artist’ Belle Gibson managed to convince the world she had incurable brain cancer but had beaten it using a healthy diet – her awful lies were uncovered when she made a crucial mistake and the extent of her fraud was discovered