George, it's possible that not all the claims were honest, as there was no record of individual items of clothing and so on. When Empress of Ireland sank, passengers claimed to have large amounts in the Purser's safe. Their luck ran out when the safe was recovered and opened. There was very little passengers' cash or valuables in it at all. This event may have influenced the Titanic claims, which were greatly reduced as the court case went on.
One lady provided proof of her clothing lost by producing the receipts from the French shops that supplied it. From memory, I think her name was Drummond. She was probably and exception.