Blair and 5-month-old son Arthur laugh it up in Beverly Hills. Plus: Russell Brand, Rihanna, Katy Perry and more
Updated: Tuesday Jan 17, 2012 | 05:00 PM EST
More from PEOPLE
- Kerry Washington Teases President Obama's 'Funny' Side Ahead of Last White House Correspondents' Dinner, as She Joins Scandal Stars at Event in D.C.
- Read the Cover Story: Prince, 1958-2016
- FROM EW: Drake Releases New Album Views
- Anti-Trump Protest Intensifies in Orange County as Roads are Blocked, Police Window Smashed
- Miley Cyrus and Liam Hemsworth Have Lunch with His Parents in Australia