Spain's Cristina de Borbon, sister of newly crowned King Felipe VI, leaving a courthouse after testifying in front of judge Jose Castro over tax-fraud and money-laundering charges in Palma de Mallorca. Thomson Reuters Spain's King Felipe VI has stripped the title of duchess from his sister, the palace said, heaping pressure on Cristina de Borbon to give up her succession rights as she prepares to stand trial on tax-fraud charges.

The bold move by the 47-year-old king, crowned nearly a year ago after the abdication of his father, Juan Carlos, is part of a bid to revive the image of a monarchy tarnished by scandals.

Cristina is due to stand trial as soon as this year and will be the first Spanish royal to face prosecution. Graft investigations in Spain have exposed high-level corruption throughout society, damaging Spaniards' faith in their institutions.

The title of Duchess of Palma de Mallorca was conferred on Cristina by her father on her marriage in 1997 to former Olympic handball player Inaki Urdangarin, who has been charged with fraud and embezzling public funds after a long-running investigation into his Noos Foundation charity.

Late last year, the couple as well as 15 others were ordered to stand trial following the investigation. No date has yet been set, though the case is expected to come to court in the second half of this year.

Both have denied any wrongdoing.

(Reporting by Sarah White; Editing by Dominic Evans)