
A spokesman for St James's Palace said official legal proceedings would begin tomorrow.
"It is the first airing and we will be seeking an injunction from them using the pictures and it will lead to a longer court case where damages will be sought," he said.
The announcement of legal action comes as Prince William and his wife continued their tour of south-east Asia, while the Irish edition of Daily Star became the second publication to use the photos reportedly taken while the royal couple was on a holiday in France.
The French magazine Closer and Chi are reported to be both part of former Italian Prime Minister Silvio Berlusconi's Mondadori media group. Meanwhile, speaking to BBC, ex-Prime Minister John Major the photographer's actions were those of a "peeping Tom" and a boundary had "plainly been crossed".
Major praised the British press for not publishing the photographs.