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They're now a family of four! See how Joel Madden and Nicole Richie dote on daughter Harlow and son Sparrow
Updated: Wednesday Jul 17, 2013 | 05:00 PM EDT
By: Kiran Hefa and Karen Quan
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Look who's got a case of the giggles! Harlow, 2, finds her funny bone while hanging out with dad Joel at The Grove in L.A. on May 3.
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