The 42-year-old Aussie singer donated one of her designer handbags to the McCann family's Bags of Hope auction that is raising money to help the search.
A source said to UK newspaper Daily Express: 'They are very grateful to everyone who gave bags and bought them. They were in all shapes and sizes, from glamorous designer bags to casual sports items.'
The bags have been donated as prizes for three fund-raisers set to be held in Leicester, Glasgow and Liverpool.
Other stars taking part include Fearne Cotton, Coleen Rooney, Carol Vorderman and Chris Tarrant.