Sarah Ferguson has not been seen publicly for months.
But while rumours swirl about the former duchess's whereabouts and whether she is contemplating a tell-all interview, there are mounting calls for her to give evidence concerning her links to Jeffrey Epstein.
US lawmakers have repeatedly called for her former husband, Andrew Mountbatten-Windsor, to answer questions about his links to the late American financier and sex offender. Now Ferguson is being urged to do the same.
Congressman Suhas Subramanyam, a member of the House Oversight Committee investigating the handling of Epstein's prosecution, said he now believed she had "information related to the investigation".
"Sarah Ferguson should give sworn testimony to our committee," he said.
