Stefani takes Kingston, 3, and Zuma, 1, to a Beverly Hills playground. Plus: Nicole Richie, Kristin Cavallari and more

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'KILLER' LOOKS

She's certainly a sartorial assassin! A fierce Kate Hudson shows off her high fashion sense – donning a short black frock and some major bling – at the premiere of her latest flick, The Killer Inside Me, at the Tribeca Film Festival Tuesday.