London: Hollywood star couple Angelina Jolie and Brad Pitt celebrated their son Pax`s seventh birthday aboard a Paris river boat.
The family was joined by their three other children Maddox, Zahara, Shiloh, boarded the ship named `Josephine` and sailed down the River Seine. However, two year-olds Vivienne and Knox were not present, reports contactmusic.com.
The actress is in France promoting her new film "The Tourist", which also stars Johnny Depp, while Pitt is on promotional duties for the animated movie "Megamind".
An eyewitness said, "Angelina was great, patient, and a very hands-on mother, making certain everything fits", and described Pitt as "very agreeable, absolutely polite and excellent with the girls."