The hair transformation was out in full effect during the holiday festivities on Sept. 2. Gorgeous award!
After staying at the festive party for about two hours, the mother-daughter duo headed home in their Range Rover.
The new blonde was back in her skinny jeans a little less than three months after having her first child.
Nori's cousins, Mason and Penelope, also attended the holiday weekend barbecue.
The Keeping Up With the Kardashians star toted around her baby girl in a covered carrier.
Kourtney Kardashian joined in on the summer fun and followed closely behind her younger sis.
She showed off her newly-dyed locks and played up the new hue with gold jewelry.
The new mother carried little North West at her friend's Labor Day party in Beverly Hills.
MORE: Check out Kim Kardashian's baby bump pics