Marc Anthony and Jennifer Lopez with twins Emme and Max
02/21/2009 at 09:00 PM EST
and Marc Anthony celebrated their 1-year-old twins Max and Emme with a birthday party at their Bel Air home on Saturday.
About 50 guests, including Nicole Richie
, Joel Madden and their daughter Harlow, 1, joined the casual afternoon party, which started at about 1 p.m.
Several guests were seen arriving with gifts in Elmo and Disney bags. Others brought stuffed animals and "Happy Birthday" balloons in festive shapes and colors.
The backyard, where the party was held, was decorated with festive metallic silver balloons and a blue-and-red color theme. Two moonbouncers, a clown and upbeat music entertained guests, who were served non-alcoholic slush drinks provided by The Margarita Man.
Guests sang "Happy Birthday" while a cake decorated with candles from Rosebud Cakes was presented.
Max and Emme's actual birthday is Sunday.
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