Liev Schreiber, Naomi Watts, and their sons Sasha and Samuel stopped at a smoothie cart in Tribeca yesterday. The fun-loving foursome have been doing their best to keep cool in the warmer months by indulging in frozen treats. The busy mom of two recently added spokesmodel to her resume, since Naomi is the new face of Pantene's Flat to Volume collection. She kept her blond locks covered with a fedora for her latest outing, but she showed off her hair in a glamorous updo at last week's CFDA Awards. Naomi arrived at the fashion party in a gold Calvin Klein gown and mingled with other stylish stars like Kirsten Dunst, Jessica Alba, and Ashley Greene.