Michelle Williams & Matilda's LA Birthday Bash

Posted Saturday August 25, 2012 9:40 AM GMT

Out for a family day of fun, Michelle Williams took her daughter Matilda to a friend’s birthday party in Los Angeles, CA on Friday afternoon (August 24).

The “Blue Valentine” actress looked casually cool in printed, cropped pants, a classic black tank top with a fedora as she watched her little one play with her gal pals.

As previously reported by GossipCenter, the six-year-old is Michelle’s number one sidekick recently as the pair are spotted out and about on the daily.

Just earlier this week, the blonde duo were seen enjoying time in Griffith Park as well as spending time with Miss Williams' current beau, Jason Segel.

Photo Credit: FameFlynet.com