Unbeliebable! Justin Bieber Imagines Anne Frank as Fan

Justin Bieber saw Anne Frank’s face — now she’s a Belieber.

The pop star made an international gaffe when he scribbled a note in the Anne Frank House guestbook Friday suggesting that the angelic Holocaust victim might have been a fan of his had she survived.

“Truly inspiring to be able to come here. Anne was a great girl. Hopefully she would have been a belieber,” the teen idol wrote after a surprise visit to the historic shrine in Amsterdam.

The note, posted on the Facebook page of the museum at Anne Frank’s home Saturday, prompted widespread outrage from commenters who called his message “tasteless” and “immature.”

“Way to turn an inspiring moment into something about yourself,” one person wrote, echoing the vast majority of more than 700 commenters.

“She would’ve been a WHAT? That little idiot is way too full of himself. She’s an important historical figure so show some respect,” another person wrote.

Bieber toured the house with his friends and security detail for about an hour while his fans and others waited outside, said Maatje Mostart, a museum spokeswoman.

There he learned the tragic story of Anne Frank — perhaps the most famous victim of the Holocaust. The German-born Jew spent most of her life in Amsterdam after her family fled the Nazis. When the Germans occupied the Netherlands, Anne and seven others, including her family, went into hiding in her father’s office building.

For two years, the teen kept a diary and never set foot outside. On Aug. 4, 1944, the family was discovered by Nazi thugs and taken to concentration camps. Anne died of typhus a year later when she was 15. Her diary — published in 1952 — inspired a play and movie and has become required reading at schools worldwide.

Mostart said Bieber was among the countless youngsters mesmerized by the resilient girl’s struggle to survive — though photos from his visit showed him mugging for the camera and goofing off.

“He was very interested in (Anne Frank’s) story,” Mostart told the Daily News Sunday. “It’s great that he’s been here, and we hope a lot of his fans will want to read about Anne Frank.”

She added that the museum isn’t focusing on the uproar the “Baby” singer sparked after writing that Frank might have becone of his fanatical, young female fans.

“We really think it’s great that a 19-year-old person wants to know who Anne Frank was and know more about her,” Mostart said.

Others also didn’t “Belieb” the Canadian crooner had bad intentions.

“If you read Anne Frank’s diary, she was into celebrities, she was into pop culture,” said Abraham Foxman, the national director of the Anti-Defamation League. “So for (Bieber) to say he would have hoped that she would have been a fan, it’s a nice thing."

A source close to Bieber echoed that sentiment, saying the singer meant that “it would have been an honor if Anne Frank had been a fan.”

“This was a totally positive, educational opportunity,” the source added, noting that a tour guide had suggested Frank might have been a fan of Bieber’s if she were 15 today.

But Assemblyman Dov Hikind (D-Brooklyn) wasn’t convinced Frank would be humming “As Long As You Love Me.”

“To talk that way about someone who ended up dying in a concentration camp, it’s honestly stupid and idiotic — and I’m being kind,” said Hikind, who himself is no stranger to allegations of insensitivity after he dressed in blackface for Purim.

Bieber was in the Netherlands to perform Saturday night as part of his “Believe” tour.