ANGELINA Jolie and Brad Pitt let their children plan the familys various birthday parties. The Hollywood super-couple raises six children together - Maddox, seven, five-year-old Pax, Zahara, three, two-year-old Shiloh and their seven-month-old twins Vivienne and Knox. And the Changeling star admits such a huge brood often becomes overwhelming. We have so many kids that we just have year-round birthdays. We just have it rotating, she said. Its a lot of fun now 'cause the older kids are old enough to help plan the birthdays for the younger kids. Jolie - who is a U.N. Goodwill Ambassador - recently revealed that she hopes to someday be able to help as many people as Audrey Hepburn. Im lucky to be in this, she said. And Im sure Audrey Hepburn felt the same. - SS