Brad Pitt? made sure to show his appreciation to a security guard on August 11 at 5:45 p.m., when the whole Jolie-Pitt clan headed to Chicago’s Field Museum and were treated to a one-hour VIP tour (the museum closes at 5 p.m. but stayed open for its special visitors).

?They were a nice couple,? says one museum guard, who was tipped $300 by Pitt for looking after the family during their visit.

While at the museum, Angelina Jolie and Pitt made wax dinosaur toys out of a molding machine with the kids and checked out the extensive collection of dinosaur remains and fossils.

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