Wizard day out for Kate, Wills and Harry

Duchess of Cambridge, her husband Prince William and his brother Prince Harry, both not pictured, leave after attending the inauguration of "Warner Bros. Studios Leavesden" near Watford, approximately 18 miles north west of central London. As well as attending the inauguration at the former World War II airfield site, the royals undertook a tour of Warner Bros. "Studio Tour London - The Making of Harry Potter", where they viewed props, costumes and models from the Harry Potter film series. (AP)

Kate the Duchess of Cambridge looks at the costume for the character Hagrid in the Harry Potter films. (AP)

Kate the Duchess of Cambridge with her husband Prince William, right, and his brother Prince Harry share a joke on the film set used to depict Diagon Alley in the Harry Potter Films during the inauguration of "Warner Bros. (AP)

Duchess of Cambridge arrives at the inauguration of "Warner Bros. (AP)

Duchess of Cambridge (AP)

Kate the Duchess of Cambridge stands with her husband Prince William, left, and his brother Prince Harry, right, as they are greeted upon their arrival to attend the inauguration of "Warner Bros. (AP)

Duchess of Cambridge with her husband Prince William, right, and his brother Prince Harry hold their wands on the film set used to depict Diagon Alley in the Harry Potter Films. (AP)

Prince William, right, and his brother Prince Harry look at a 'Batsuit' used in the Batman films. (AP)

Duchess of Cambridge watches her husband Prince William as he sits on the 'Batpod' during the inauguration of "Warner Bros. (AP)

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