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Brad Pitt, Angelina Jolie, Pax, Zahara, Shiloh

INFphoto.com

What better way to kick off a birthday than a trip to Sin City—with the whole family! 

Just one day before Brad Pitt turned 48, the Moneyball star and Angelina Jolie eschewed the typical Vegas party festivities for a day out with their entire brood Saturday.

So, where did they all end up? 

Cirque de Soleil's Michael Jackson: The Immortal World tour!

Maddox, Pax, Zahara, Shiloh and twins Vivienne and Knox were all on hand to check out the performance at Mandalay Bay Hotel and even gave the cast a standing ovation at the end of the show.

A source told E! News the couple shied away from the themed hotels along the Vegas strip for Pitt's birthday trip accommodations, instead opting for the Four Seasons. 

-Reporting by Claudia Rosenbaum