A St James's Palace spokesman would not comment on whether William had been informed about the issue or if they were considering any form of legal action against the magazine.
The publication comes less than six months after the magazine produced a 26-page spread showing Kate topless during a holiday in France.
At the time Chi's editor Alfonso Signorini defended his decision to publish the pictures saying: "I am a director of a newspaper not a supermarket, I don't sell artichokes and carrots, I sell photographic scoops."
More top news
The 64-year-old’s victory will bring in a new system transferring all executive powers to him.
Last week, the Government announced the NHS would receive an additional £20 billion a year in real terms funding by 2024.
The firefighter who led the initial response said he could not remember specific training on evacuating buildings with such a policy.