Jennifer Lopez and Marc Anthony celebrated their twins Max and Emme's third birthday with a party at their Hidden Hills home on Saturday.
The cartoon-themed afternoon party took place in the backyard, which had to be tented after a rainstorm threatened to dampen the celebration.
Among the 50 guests were Gwen Stefani accompanied by husband Gavin Rossdale and sons Kingston, 4½, and Zuma, 2½, as well as Leah Remini with her daughter Sofia, 6½.
The party featured moon bouncers, cotton candy machines and a huge cake. Festive cartoon character balloons decorated the backyard and guests received gift bags upon leaving the party.
"Jennifer was very excited to celebrate her babies' birthday," a source tells PEOPLE. "She went all out and everyone had a great time at the party."
On Max and Emme's actual birthday on Feb. 22, Lopez Tweeted, "It's my coconuts bday 2day!!! HAPPY BDAY my beautiful babies … you're 3 2day and Mama's SO proud! There are no words 4 how much I love u!!"
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