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
- How Rob Tested Kim and Khloé's Sisterly Love on KUWTK
- The Style Top 5: All the Stars Are Going Gray, Amal Clooney's Stylish Sister Hits N.Y.C and More
- 2 Men Killed Outside Muhammad Art Contest in Texas
- Game of Thrones Recap: 'Sons of the Harpy'
- RHOA Reunion: NeNe and Kenya May Have Just Had the 'Fight of the Century'