Two weeks after giving birth, Russell takes her newborn out for a New York stroll. Plus Hayden & Masi, Courteney & David and more

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A GUM BALL

Ashlee Simpson makes one hot-pink hostess at a Stride Gum-sponsored summer solstice celebration Thursday at Teddy's at the Roosevelt Hotel. The singer left by the time big sister Jessica and her gal pals stopped by the bash.