Brad, Angelina Take Maddox, Siblings to See Wicked for His B-Day!

Maddox Jolie-Pitt and his famous family took a trip to the marvelous land of Oz for his tenth birthday.

On Saturday, a day after Maddox turned 10, Angelina Jolieand Brad Pitt treated their eldest to a matinee performance of Wicked -- the smash Broadway musical -- on London's West End.

Maddox was photographed with mom Jolie, 36, dad Pitt, 47, and sister Shiloh, 5, near the theater. Sister Zahara, 6, and brother Pax, 7, were also on hand for the theater event.

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Word of the superstar brood's presence spread to the cast of the show.

"There was definitely a big excitement backstage! Everyone was on a high," a Wicked castmember tells Us Weekly.

And the Jolie-Pitts weren't perched a in a VIP box, either -- sitting in the orchestra, but surrounded by a few empty, reserved seats.

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What did Maddox, Shiloh and the gang think of the show, about the earlier lives of witches of Oz (Elphaba, the Wicked Witch of the West and Glinda, the Good Witch of the North)?

"They were very happy and quite quiet," the castmate says. "The children seemed fascinated by the spectacle." The group did not, however, visit backstage.

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The family have been hanging out in England as Pitt shoots World War Z -- and, despite Saturday's fun outting, Jolie's not having the best time ever.

"She's not pleased being at home while he's on set," an insider told Us. "These are the longest hours he's spent on a set in a while, so it's just her and the kids with not much to do."

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