Prince Harry leaves teenage girls weak at the knees while discussing pizza on surprise trip to Chicago school with Michelle Obama

PRINCE Harry this week appeared to capture the hearts of a group of students while discussing pizza during a surprise visit to a Chicago school.

The 33-year-old royal revealed his dietary habits to schoolgirls when he visited Hyde Park Academy in the city's South Side with former First Lady Michelle Obama on Tuesday.

Footage released by Kensington Palace today shows students quizzing him on Chicago’s signature delicacy.

In the clip, one student tells him: "When Prince Harry’s here, he eats Chicago — make sure he has a pizza."

Harry replies: "I had pizza last night. I don’t even eat pizza anymore, but I had pizza last night."

Asked if he tried deep-dish, he says: “We had deep-dish, and we had thin crust. I promise you, I will make sure I eat Chicago.”

The exchange sparked a few giggles from his young fans at Hyde Park Academy, which is across the street from the future site of the Obama Presidential Center.

As well as talking pizza, the prince chatted to youngsters on how they can use their voices to change the world while Michelle reminded them that she grew up in the same neighbourhood.

Caroline Adler Morales, the former first lady’s communications director, stated: “The warm and wide-ranging conversation, lasting over an hour, covered how the Obama Presidential Centre will showcase the South Side of Chicago for a global audience, the importance of young people staying inspired and hopeful, and the transformative power of students using their voices to change the world.”

Harry also spoke movingly about his late mother, Princess Diana, at the Obama Foundation’s inaugural summit.

He said: “I think she had a lot in common with everybody but also she certainly listened.

“In a very, very short space of time she was like a vacuum going around, sucking up all the information, all the criticism, all the issues, all the positives and negatives from everybody, then putting her name and her platform toward the bigger issues that had never been talked about.

“In society we suffer from this illusion, or reality, that some problems become so big that nobody wants to get involved.

"She was the one that changed that. I will always look up to her, everything she did and the way she did it was having an impact, making a difference."