Brad Pitt reportedly celebrated his 48th birthday Thriller-style on Saturday night.
Joined by his six kids and partner Angelina Jolie, the Moneyball actor marked the occasion by watching the Michael Jackson The Immortal, the Cirque Du Soleil touring show, in Las Vegas, according to People magazine.
Going incognito in round glasses, a source said that Brad and his brood enjoyed the show before leaving quietly as the cast took a final bow.
"They had great seats, sitting right beside the stage," said the insider. "They really seemed to enjoy the show. The performers didn't know they were there and a few of them recognized them while they were on stage, so it was pretty exciting."
The family is then believed to have spent the night at the nearby Four Seasons hotel.
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