Get 4 FREE Issues of PEOPLE
Break out the streamers and balloons! From Romeo to Olive, see which celeb cuties are getting into party mode this month
Updated: Sunday Sep 01, 2013 | 06:00 AM EDT
By: Laura Franco
More from PEOPLE
See More News
9 of 18
Although he's all grown up, Madonna stays close to her youngest son – he's 8 on Sept. 24 – as they make a safe landing in London's Heathrow Airport on July 19.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.
In partnership with AOL