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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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Following her weekend bachelorette party in Mexico, Richie returns to L.A. to celebrate her 29th birthday on Sept. 21, 2010 with Madden and 1-year-old Sparrow.
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