Shania Twain used to survive on “mouldy” bread and mustard.

The ‘That Don’t Impress Me Much’ hitmaker may be a millionaire now, but her childhood in Ontario was blighted by poverty, with her mother Sharon struggling with depression and her stepfather Jerry Twain facing racial discrimination in his attempts to find work, so there was little food to spare for the family, which also included the singer’s four half-siblings.