Nicole Richie Celebrates Daughter Harlow's 4th Birthday

Harlow Madden is a big girl, now!

The daughter of part-Mexican designer Nicole Richie and Joel Madden, turned four on January 11! She celebrated her birthday with a Toy Story-themed party on Monday at COOP playspace in Studio City, CA.

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35 kids were in attendance at the bash, which included visits from the film’s characters Woody, Buzz, and Jessie. Pizza and juice were served for the guests, who included the children of Gavin Rossdale, Tobey Maguire, Sara Gilbert, and Rachel Zoe.

When the cake came out, “Harlow started crying when everyone sang happy birthday and Joel said she was crying tears of joy,” a source told Us Weekly.

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“Everyone had a blast and Joel and Nicole said it was their best kids party yet,” a source said.