A paparazzo who took photographs of the daughters of President Barack Obama walking along a Hawaiian beach last week made a big mistake — at least, in the eyes of the Oval Office.

Because as soon as the images of Sasha and Malia were sent out to news outlets around the world, the photographer received an official letter from the White House telling him to immediately stop their release, Celebuzz has exclusively learned.

Ironically, the man was waiting for pregnant Hollywood star Jessica Simpson to leave her Kailua Beach retreat in Honolulu County when the Presidential sisters, vacationing with their famous parents in an adjacent property since Dec. 21, came walking-by.

“After he took the photographs, agents from the United States Secret Service came over and asked him for identification,” according to a source who insisted on anonymity because they were not authorized to speak publicly. Celebuzz has chosen not to name the photographer.

“They were nice enough to him and didn’t seize his camera equipment.

“But when he sent the photographs out via the agency’s wire, he received a letter, on a White House letterhead, requesting that the images not be released.”

The letter was from the White House Press Office, the source added.

“It stated that Sasha and Malia’s privacy should be maintained as they were on a private holiday,” the insider told Celebuzz.

“The letter said that other media had been respecting these requirements.”

President Obama and First Lady Michelle Obama are known to be very protective of Malia, 14 and Sasha, 11, previously demanding that the media respect their privacy unless they are attending a public or pre-arranged event.

The Obamas returned to Washington on Sunday after their annual end-of-year visit to the President’s native state.

The family was staying at a 7000 sq ft rental home in the upscale Kailua area that boasts five bedrooms, a media room and a secluded lagoon style pool with tropical waterfalls and a spa.

The President — who spent eight years at Punahou School in Hawaii before he graduated — has his vacation disrupted just after Christmas when he was forced to return to the capital to help broker a solution on the fiscal cliff crisis.

He returned to Hawaii less than an hour after Congress and the White House resolved the fiscal cliff, at the eleventh hour.

Obama boarded Air Force One on Jan. 1 to return to his planned holiday vacation and later reunited with his wife and daughters, who have been vacationing there since just before Christmas.

The president began his family holiday — his first extended personal time outside of Washington since the presidential campaign.

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