Actress Jennifer Lopez arrives at the 66th annual Golden Globe awards in Beverly Hills, California January 11, 2009. [Agencies]

Jennifer Lopez threw a star-studded party to celebrate her twins' first birthday on Saturday afternoon (21.02.09).

The singer-and-actress and her husband Marc Anthony hosted 50 guests in the garden of their Bel Air home, in Los Angeles, in honour of Max and Emme, who turned one yesterday (22.02.09).

A source said: "All the children had a great time. Jennifer and Marc had done a great job decorating their backyard in red and blue with silver balloons, and they had really thought how best to keep the kids entertained.

"There were two moonbouncers, a clown and great music and they had even got a cocktail company, The Margarita Man, to make non-alcoholic slush drinks."

Guests including Nicole Richie, Joel Madden and their one-year-old daughter Harlow sang happy birthday while a cake from elite Beverly Hills bakers Rosebud Cakes was presented to the twins.

Jennifer has previously admitted she is unsure whether she will expand her family any further.

She said: "I don't know if I'm going to have kids again, so I want it to be a beautiful experience. I don't want to have any drama. I want to just be smiling every day.' "