Prince William and Kate Middleton are asking for €1.5 million in damages in the trial over topless photos taken of Kate during a royal vacation in France back in September 2012.
On behalf of the Duke and Duchess, French barrister Jean Veil made the demand on the opening day of the criminal trial against Closer magazine and the photographers that took the photos, which began on Tuesday in Nanterre, a Paris suburb.
The photos in question, which show Middleton topless on her hotel balcony, were taken of via a long-lens during their 2012 vacation in the South of France and were subsequently published in France's Closer magazine. The couple is also demanding €50,000 from La Provence, which published non-topless photos of the Duchess of Cambridge.
See photos of Prince William and Kate Middleton together:
William is also featured in the photos and is seen applying sunscreen to Kate, as The Daily Mail reports.
Ernesto Mauri, an executive at the Closer-owning Mondadori group, Closer editor Laurence Pieau, and photographers Cyril Moreau and Dominique Jacovides are all being charged with invasion of privacy and complicity.
Moreau and Jacovides deny any involvement in the taking of the topless photos, though there's sufficient evidence that both photographers were paid around the time that the images were published in the magazine. Closer never released the identity of the photographers.
Though most British newspapers refused to buy the photos of Middleton, they did appear in other publications throughout Europe at the time.
Prince William and Kate Middleton were not in attendance at the trial's first day.
RELATED: See photos of Kate Middleton through the years:
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