Nicole Richie's daughter Harlow has celebrated her fourth birthday with a 'Toy Story'-themed party alongside a whole host of celebrity guests.
designer - whose House of Harlow 1960 clothes collection is named after her first-born - husband Joel Madden and two-year-old son Sparrow were joined by Bush rocker Gavin Rossdale, who brought along his and Gwen Stefani's children Kingston, five, and three-year-old Zuma.
Meanwhile, Tobey Maguire's wife Jen Meyer, Sara Gilbert and Rachel Zoe and their kids
also attended the event at Studio City, California.
An onlooker told Us Weekly magazine: "Harlow started crying when everyone sang happy birthday and Joel said she was crying tears of joy."
The 35 youngsters who attended the bash were treated to a visit from the Pixar animation movie's star characters Woody, Buzz Lightyear and Jessie and enjoyed a feast of pizza, juice and sugar-free cake at the bash.
An insider added: "Everyone had a blast and Joel and Nicole said it was their best kids' party yet."
Harlow and her fellow partygoers indulged on a feast of pizza, juice and sugar-free cake at the bash.